Home / 8,439.80-11,645.12-4,901.18

Finding the Fourth Proportional to 8,439.80, 11,645.12 and 4,901.18

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Solution

The fourth proportional to 8,439.80, 11,645.12 and 4,901.18 is: 6,762.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,439.80 : 11,645.12 = 4,901.18 : x
  2. Step 2: Convert to fraction form
    8,439.80/11,645.12 = 4,901.18/x
  3. Step 3: Cross multiply
    8,439.80x = 11,645.12 × 4,901.18
  4. Step 4: Simplify right side
    8,439.80x = 57,074,829.24
  5. Step 5: Solve for x
    x = 57,074,829.24/8,439.80
  6. Step 6: Final answer
    x = 6,762.58

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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.