Home / 1,355.04-2,031.36-585.12

Finding the Fourth Proportional to 1,355.04, 2,031.36 and 585.12

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Solution

The fourth proportional to 1,355.04, 2,031.36 and 585.12 is: 877.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,355.04 : 2,031.36 = 585.12 : x
  2. Step 2: Convert to fraction form
    1,355.04/2,031.36 = 585.12/x
  3. Step 3: Cross multiply
    1,355.04x = 2,031.36 × 585.12
  4. Step 4: Simplify right side
    1,355.04x = 1,188,589.36
  5. Step 5: Solve for x
    x = 1,188,589.36/1,355.04
  6. Step 6: Final answer
    x = 877.16

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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.