Home / 1,861.09-2,791.64-1,038.13

Finding the Fourth Proportional to 1,861.09, 2,791.64 and 1,038.13

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Solution

The fourth proportional to 1,861.09, 2,791.64 and 1,038.13 is: 1,557.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,861.09 : 2,791.64 = 1,038.13 : x
  2. Step 2: Convert to fraction form
    1,861.09/2,791.64 = 1,038.13/x
  3. Step 3: Cross multiply
    1,861.09x = 2,791.64 × 1,038.13
  4. Step 4: Simplify right side
    1,861.09x = 2,898,080.04
  5. Step 5: Solve for x
    x = 2,898,080.04/1,861.09
  6. Step 6: Final answer
    x = 1,557.20

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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.