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Finding the Fourth Proportional to 1,552.59, 2,143.53 and 993.29

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Solution

The fourth proportional to 1,552.59, 2,143.53 and 993.29 is: 1,371.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,552.59 : 2,143.53 = 993.29 : x
  2. Step 2: Convert to fraction form
    1,552.59/2,143.53 = 993.29/x
  3. Step 3: Cross multiply
    1,552.59x = 2,143.53 × 993.29
  4. Step 4: Simplify right side
    1,552.59x = 2,129,136.20
  5. Step 5: Solve for x
    x = 2,129,136.20/1,552.59
  6. Step 6: Final answer
    x = 1,371.34

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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.