Home / 1,275.90-1,913.61-1,042.62

Finding the Fourth Proportional to 1,275.90, 1,913.61 and 1,042.62

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Solution

The fourth proportional to 1,275.90, 1,913.61 and 1,042.62 is: 1,563.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,275.90 : 1,913.61 = 1,042.62 : x
  2. Step 2: Convert to fraction form
    1,275.90/1,913.61 = 1,042.62/x
  3. Step 3: Cross multiply
    1,275.90x = 1,913.61 × 1,042.62
  4. Step 4: Simplify right side
    1,275.90x = 1,995,168.06
  5. Step 5: Solve for x
    x = 1,995,168.06/1,275.90
  6. Step 6: Final answer
    x = 1,563.73

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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.