Home / 7,785.28-10,743.60-4,248.40

Finding the Fourth Proportional to 7,785.28, 10,743.60 and 4,248.40

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Solution

The fourth proportional to 7,785.28, 10,743.60 and 4,248.40 is: 5,862.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,785.28 : 10,743.60 = 4,248.40 : x
  2. Step 2: Convert to fraction form
    7,785.28/10,743.60 = 4,248.40/x
  3. Step 3: Cross multiply
    7,785.28x = 10,743.60 × 4,248.40
  4. Step 4: Simplify right side
    7,785.28x = 45,643,110.24
  5. Step 5: Solve for x
    x = 45,643,110.24/7,785.28
  6. Step 6: Final answer
    x = 5,862.74

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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.