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Finding the Fourth Proportional to 5,760.90, 8,642.43 and 1,865.34

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Solution

The fourth proportional to 5,760.90, 8,642.43 and 1,865.34 is: 2,798.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,760.90 : 8,642.43 = 1,865.34 : x
  2. Step 2: Convert to fraction form
    5,760.90/8,642.43 = 1,865.34/x
  3. Step 3: Cross multiply
    5,760.90x = 8,642.43 × 1,865.34
  4. Step 4: Simplify right side
    5,760.90x = 16,121,070.38
  5. Step 5: Solve for x
    x = 16,121,070.38/5,760.90
  6. Step 6: Final answer
    x = 2,798.36

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1.5x scale

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.