Home / 5,123.95-7,686.14-2,657.19

Finding the Fourth Proportional to 5,123.95, 7,686.14 and 2,657.19

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Solution

The fourth proportional to 5,123.95, 7,686.14 and 2,657.19 is: 3,985.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,123.95 : 7,686.14 = 2,657.19 : x
  2. Step 2: Convert to fraction form
    5,123.95/7,686.14 = 2,657.19/x
  3. Step 3: Cross multiply
    5,123.95x = 7,686.14 × 2,657.19
  4. Step 4: Simplify right side
    5,123.95x = 20,423,534.35
  5. Step 5: Solve for x
    x = 20,423,534.35/5,123.95
  6. Step 6: Final answer
    x = 3,985.90

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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.