Home / 1,545.09-2,317.50-621.15

Finding the Fourth Proportional to 1,545.09, 2,317.50 and 621.15

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Solution

The fourth proportional to 1,545.09, 2,317.50 and 621.15 is: 931.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,545.09 : 2,317.50 = 621.15 : x
  2. Step 2: Convert to fraction form
    1,545.09/2,317.50 = 621.15/x
  3. Step 3: Cross multiply
    1,545.09x = 2,317.50 × 621.15
  4. Step 4: Simplify right side
    1,545.09x = 1,439,515.13
  5. Step 5: Solve for x
    x = 1,439,515.13/1,545.09
  6. Step 6: Final answer
    x = 931.67

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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.