Home / 1,411.03-2,116.99-631.69

Finding the Fourth Proportional to 1,411.03, 2,116.99 and 631.69

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Solution

The fourth proportional to 1,411.03, 2,116.99 and 631.69 is: 947.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,411.03 : 2,116.99 = 631.69 : x
  2. Step 2: Convert to fraction form
    1,411.03/2,116.99 = 631.69/x
  3. Step 3: Cross multiply
    1,411.03x = 2,116.99 × 631.69
  4. Step 4: Simplify right side
    1,411.03x = 1,337,276.91
  5. Step 5: Solve for x
    x = 1,337,276.91/1,411.03
  6. Step 6: Final answer
    x = 947.73

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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.