Home / 7,980.18-11,015.19-5,461.35

Finding the Fourth Proportional to 7,980.18, 11,015.19 and 5,461.35

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Solution

The fourth proportional to 7,980.18, 11,015.19 and 5,461.35 is: 7,538.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,980.18 : 11,015.19 = 5,461.35 : x
  2. Step 2: Convert to fraction form
    7,980.18/11,015.19 = 5,461.35/x
  3. Step 3: Cross multiply
    7,980.18x = 11,015.19 × 5,461.35
  4. Step 4: Simplify right side
    7,980.18x = 60,157,807.91
  5. Step 5: Solve for x
    x = 60,157,807.91/7,980.18
  6. Step 6: Final answer
    x = 7,538.40

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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.