Home / 5,142.65-7,712.76-1,445.23

Finding the Fourth Proportional to 5,142.65, 7,712.76 and 1,445.23

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Solution

The fourth proportional to 5,142.65, 7,712.76 and 1,445.23 is: 2,167.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,142.65 : 7,712.76 = 1,445.23 : x
  2. Step 2: Convert to fraction form
    5,142.65/7,712.76 = 1,445.23/x
  3. Step 3: Cross multiply
    5,142.65x = 7,712.76 × 1,445.23
  4. Step 4: Simplify right side
    5,142.65x = 11,146,673.57
  5. Step 5: Solve for x
    x = 11,146,673.57/5,142.65
  6. Step 6: Final answer
    x = 2,167.50

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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.