Home / 2,129.09-2,937.31-1,570.88

Finding the Fourth Proportional to 2,129.09, 2,937.31 and 1,570.88

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Solution

The fourth proportional to 2,129.09, 2,937.31 and 1,570.88 is: 2,167.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,129.09 : 2,937.31 = 1,570.88 : x
  2. Step 2: Convert to fraction form
    2,129.09/2,937.31 = 1,570.88/x
  3. Step 3: Cross multiply
    2,129.09x = 2,937.31 × 1,570.88
  4. Step 4: Simplify right side
    2,129.09x = 4,614,161.53
  5. Step 5: Solve for x
    x = 4,614,161.53/2,129.09
  6. Step 6: Final answer
    x = 2,167.20

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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.