Home / 1,543.62-2,129.16-1,011.45

Finding the Fourth Proportional to 1,543.62, 2,129.16 and 1,011.45

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Solution

The fourth proportional to 1,543.62, 2,129.16 and 1,011.45 is: 1,395.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,543.62 : 2,129.16 = 1,011.45 : x
  2. Step 2: Convert to fraction form
    1,543.62/2,129.16 = 1,011.45/x
  3. Step 3: Cross multiply
    1,543.62x = 2,129.16 × 1,011.45
  4. Step 4: Simplify right side
    1,543.62x = 2,153,538.88
  5. Step 5: Solve for x
    x = 2,153,538.88/1,543.62
  6. Step 6: Final answer
    x = 1,395.12

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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.