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Finding the Fourth Proportional to 9,775.60, 13,508.18 and 7,118.36

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Solution

The fourth proportional to 9,775.60, 13,508.18 and 7,118.36 is: 9,836.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,775.60 : 13,508.18 = 7,118.36 : x
  2. Step 2: Convert to fraction form
    9,775.60/13,508.18 = 7,118.36/x
  3. Step 3: Cross multiply
    9,775.60x = 13,508.18 × 7,118.36
  4. Step 4: Simplify right side
    9,775.60x = 96,156,088.18
  5. Step 5: Solve for x
    x = 96,156,088.18/9,775.60
  6. Step 6: Final answer
    x = 9,836.34

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.