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Finding the Fourth Proportional to 1,581.90, 2,372.90 and 760.01

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Solution

The fourth proportional to 1,581.90, 2,372.90 and 760.01 is: 1,140.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,581.90 : 2,372.90 = 760.01 : x
  2. Step 2: Convert to fraction form
    1,581.90/2,372.90 = 760.01/x
  3. Step 3: Cross multiply
    1,581.90x = 2,372.90 × 760.01
  4. Step 4: Simplify right side
    1,581.90x = 1,803,417.76
  5. Step 5: Solve for x
    x = 1,803,417.76/1,581.90
  6. Step 6: Final answer
    x = 1,140.03

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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.