Home / 9,159.80-13,740.47-2,920.70

Finding the Fourth Proportional to 9,159.80, 13,740.47 and 2,920.70

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Solution

The fourth proportional to 9,159.80, 13,740.47 and 2,920.70 is: 4,381.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,159.80 : 13,740.47 = 2,920.70 : x
  2. Step 2: Convert to fraction form
    9,159.80/13,740.47 = 2,920.70/x
  3. Step 3: Cross multiply
    9,159.80x = 13,740.47 × 2,920.70
  4. Step 4: Simplify right side
    9,159.80x = 40,131,790.73
  5. Step 5: Solve for x
    x = 40,131,790.73/9,159.80
  6. Step 6: Final answer
    x = 4,381.30

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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.