Home / 4,772.80-7,159.20-3,130.30

Finding the Fourth Proportional to 4,772.80, 7,159.20 and 3,130.30

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Solution

The fourth proportional to 4,772.80, 7,159.20 and 3,130.30 is: 4,695.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,772.80 : 7,159.20 = 3,130.30 : x
  2. Step 2: Convert to fraction form
    4,772.80/7,159.20 = 3,130.30/x
  3. Step 3: Cross multiply
    4,772.80x = 7,159.20 × 3,130.30
  4. Step 4: Simplify right side
    4,772.80x = 22,410,443.76
  5. Step 5: Solve for x
    x = 22,410,443.76/4,772.80
  6. Step 6: Final answer
    x = 4,695.45

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Similar ratio
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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.