Home / 8,785.88-12,124.80-4,807.28

Finding the Fourth Proportional to 8,785.88, 12,124.80 and 4,807.28

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Solution

The fourth proportional to 8,785.88, 12,124.80 and 4,807.28 is: 6,634.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,785.88 : 12,124.80 = 4,807.28 : x
  2. Step 2: Convert to fraction form
    8,785.88/12,124.80 = 4,807.28/x
  3. Step 3: Cross multiply
    8,785.88x = 12,124.80 × 4,807.28
  4. Step 4: Simplify right side
    8,785.88x = 58,287,308.54
  5. Step 5: Solve for x
    x = 58,287,308.54/8,785.88
  6. Step 6: Final answer
    x = 6,634.20

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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.