Home / 1,545.87-2,316.41-1,220.43

Finding the Fourth Proportional to 1,545.87, 2,316.41 and 1,220.43

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Solution

The fourth proportional to 1,545.87, 2,316.41 and 1,220.43 is: 1,828.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,545.87 : 2,316.41 = 1,220.43 : x
  2. Step 2: Convert to fraction form
    1,545.87/2,316.41 = 1,220.43/x
  3. Step 3: Cross multiply
    1,545.87x = 2,316.41 × 1,220.43
  4. Step 4: Simplify right side
    1,545.87x = 2,827,010.15
  5. Step 5: Solve for x
    x = 2,827,010.15/1,545.87
  6. Step 6: Final answer
    x = 1,828.75

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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.