Home / 9,139.13-13,706.59-2,897.98

Finding the Fourth Proportional to 9,139.13, 13,706.59 and 2,897.98

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Solution

The fourth proportional to 9,139.13, 13,706.59 and 2,897.98 is: 4,346.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,139.13 : 13,706.59 = 2,897.98 : x
  2. Step 2: Convert to fraction form
    9,139.13/13,706.59 = 2,897.98/x
  3. Step 3: Cross multiply
    9,139.13x = 13,706.59 × 2,897.98
  4. Step 4: Simplify right side
    9,139.13x = 39,721,423.69
  5. Step 5: Solve for x
    x = 39,721,423.69/9,139.13
  6. Step 6: Final answer
    x = 4,346.30

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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.