Home / 1,537.06-2,299.92-921.20

Finding the Fourth Proportional to 1,537.06, 2,299.92 and 921.20

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Solution

The fourth proportional to 1,537.06, 2,299.92 and 921.20 is: 1,378.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,537.06 : 2,299.92 = 921.20 : x
  2. Step 2: Convert to fraction form
    1,537.06/2,299.92 = 921.20/x
  3. Step 3: Cross multiply
    1,537.06x = 2,299.92 × 921.20
  4. Step 4: Simplify right side
    1,537.06x = 2,118,686.30
  5. Step 5: Solve for x
    x = 2,118,686.30/1,537.06
  6. Step 6: Final answer
    x = 1,378.40

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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.