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Finding the Fourth Proportional to 5,866.85, 8,739.15 and 5,555.20

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Solution

The fourth proportional to 5,866.85, 8,739.15 and 5,555.20 is: 8,274.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,866.85 : 8,739.15 = 5,555.20 : x
  2. Step 2: Convert to fraction form
    5,866.85/8,739.15 = 5,555.20/x
  3. Step 3: Cross multiply
    5,866.85x = 8,739.15 × 5,555.20
  4. Step 4: Simplify right side
    5,866.85x = 48,547,726.08
  5. Step 5: Solve for x
    x = 48,547,726.08/5,866.85
  6. Step 6: Final answer
    x = 8,274.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.