Home / 9,001.20-13,465.76-7,781.75

Finding the Fourth Proportional to 9,001.20, 13,465.76 and 7,781.75

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Solution

The fourth proportional to 9,001.20, 13,465.76 and 7,781.75 is: 11,641.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,001.20 : 13,465.76 = 7,781.75 : x
  2. Step 2: Convert to fraction form
    9,001.20/13,465.76 = 7,781.75/x
  3. Step 3: Cross multiply
    9,001.20x = 13,465.76 × 7,781.75
  4. Step 4: Simplify right side
    9,001.20x = 104,787,071.64
  5. Step 5: Solve for x
    x = 104,787,071.64/9,001.20
  6. Step 6: Final answer
    x = 11,641.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.