Home / 2,129.12-2,937.99-1,569.90

Finding the Fourth Proportional to 2,129.12, 2,937.99 and 1,569.90

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Solution

The fourth proportional to 2,129.12, 2,937.99 and 1,569.90 is: 2,166.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,129.12 : 2,937.99 = 1,569.90 : x
  2. Step 2: Convert to fraction form
    2,129.12/2,937.99 = 1,569.90/x
  3. Step 3: Cross multiply
    2,129.12x = 2,937.99 × 1,569.90
  4. Step 4: Simplify right side
    2,129.12x = 4,612,333.79
  5. Step 5: Solve for x
    x = 4,612,333.79/2,129.12
  6. Step 6: Final answer
    x = 2,166.31

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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.