Home / 9,671.20-13,346.02-5,638.76

Finding the Fourth Proportional to 9,671.20, 13,346.02 and 5,638.76

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Solution

The fourth proportional to 9,671.20, 13,346.02 and 5,638.76 is: 7,781.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,671.20 : 13,346.02 = 5,638.76 : x
  2. Step 2: Convert to fraction form
    9,671.20/13,346.02 = 5,638.76/x
  3. Step 3: Cross multiply
    9,671.20x = 13,346.02 × 5,638.76
  4. Step 4: Simplify right side
    9,671.20x = 75,255,003.74
  5. Step 5: Solve for x
    x = 75,255,003.74/9,671.20
  6. Step 6: Final answer
    x = 7,781.35

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Half scale
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Double scale
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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.