Home / 1,545.51-2,318.28-391.26

Finding the Fourth Proportional to 1,545.51, 2,318.28 and 391.26

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Solution

The fourth proportional to 1,545.51, 2,318.28 and 391.26 is: 586.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,545.51 : 2,318.28 = 391.26 : x
  2. Step 2: Convert to fraction form
    1,545.51/2,318.28 = 391.26/x
  3. Step 3: Cross multiply
    1,545.51x = 2,318.28 × 391.26
  4. Step 4: Simplify right side
    1,545.51x = 907,050.23
  5. Step 5: Solve for x
    x = 907,050.23/1,545.51
  6. Step 6: Final answer
    x = 586.89

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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.