Home / 1,572.39-2,359.13-986.69

Finding the Fourth Proportional to 1,572.39, 2,359.13 and 986.69

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Solution

The fourth proportional to 1,572.39, 2,359.13 and 986.69 is: 1,480.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,572.39 : 2,359.13 = 986.69 : x
  2. Step 2: Convert to fraction form
    1,572.39/2,359.13 = 986.69/x
  3. Step 3: Cross multiply
    1,572.39x = 2,359.13 × 986.69
  4. Step 4: Simplify right side
    1,572.39x = 2,327,729.98
  5. Step 5: Solve for x
    x = 2,327,729.98/1,572.39
  6. Step 6: Final answer
    x = 1,480.38

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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.