Home / 7,765.28-10,718.16-4,781.60

Finding the Fourth Proportional to 7,765.28, 10,718.16 and 4,781.60

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Solution

The fourth proportional to 7,765.28, 10,718.16 and 4,781.60 is: 6,599.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,765.28 : 10,718.16 = 4,781.60 : x
  2. Step 2: Convert to fraction form
    7,765.28/10,718.16 = 4,781.60/x
  3. Step 3: Cross multiply
    7,765.28x = 10,718.16 × 4,781.60
  4. Step 4: Simplify right side
    7,765.28x = 51,249,953.86
  5. Step 5: Solve for x
    x = 51,249,953.86/7,765.28
  6. Step 6: Final answer
    x = 6,599.88

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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.