Home / 1,545.70-2,131.82-1,358.79

Finding the Fourth Proportional to 1,545.70, 2,131.82 and 1,358.79

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Solution

The fourth proportional to 1,545.70, 2,131.82 and 1,358.79 is: 1,874.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,545.70 : 2,131.82 = 1,358.79 : x
  2. Step 2: Convert to fraction form
    1,545.70/2,131.82 = 1,358.79/x
  3. Step 3: Cross multiply
    1,545.70x = 2,131.82 × 1,358.79
  4. Step 4: Simplify right side
    1,545.70x = 2,896,678.24
  5. Step 5: Solve for x
    x = 2,896,678.24/1,545.70
  6. Step 6: Final answer
    x = 1,874.03

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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.