Home / 1,543.24-2,131.49-1,045.01

Finding the Fourth Proportional to 1,543.24, 2,131.49 and 1,045.01

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Solution

The fourth proportional to 1,543.24, 2,131.49 and 1,045.01 is: 1,443.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,543.24 : 2,131.49 = 1,045.01 : x
  2. Step 2: Convert to fraction form
    1,543.24/2,131.49 = 1,045.01/x
  3. Step 3: Cross multiply
    1,543.24x = 2,131.49 × 1,045.01
  4. Step 4: Simplify right side
    1,543.24x = 2,227,428.36
  5. Step 5: Solve for x
    x = 2,227,428.36/1,543.24
  6. Step 6: Final answer
    x = 1,443.35

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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.