Home / 1,560.59-2,155.83-1,247.93

Finding the Fourth Proportional to 1,560.59, 2,155.83 and 1,247.93

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Solution

The fourth proportional to 1,560.59, 2,155.83 and 1,247.93 is: 1,723.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,560.59 : 2,155.83 = 1,247.93 : x
  2. Step 2: Convert to fraction form
    1,560.59/2,155.83 = 1,247.93/x
  3. Step 3: Cross multiply
    1,560.59x = 2,155.83 × 1,247.93
  4. Step 4: Simplify right side
    1,560.59x = 2,690,324.93
  5. Step 5: Solve for x
    x = 2,690,324.93/1,560.59
  6. Step 6: Final answer
    x = 1,723.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.