Home / 5,139.52-7,710.40-1,677.12

Finding the Fourth Proportional to 5,139.52, 7,710.40 and 1,677.12

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Solution

The fourth proportional to 5,139.52, 7,710.40 and 1,677.12 is: 2,516.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,139.52 : 7,710.40 = 1,677.12 : x
  2. Step 2: Convert to fraction form
    5,139.52/7,710.40 = 1,677.12/x
  3. Step 3: Cross multiply
    5,139.52x = 7,710.40 × 1,677.12
  4. Step 4: Simplify right side
    5,139.52x = 12,931,266.05
  5. Step 5: Solve for x
    x = 12,931,266.05/5,139.52
  6. Step 6: Final answer
    x = 2,516.05

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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.