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Finding the Fourth Proportional to 3,393.90, 5,091.12 and 1,545.08

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Solution

The fourth proportional to 3,393.90, 5,091.12 and 1,545.08 is: 2,317.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,393.90 : 5,091.12 = 1,545.08 : x
  2. Step 2: Convert to fraction form
    3,393.90/5,091.12 = 1,545.08/x
  3. Step 3: Cross multiply
    3,393.90x = 5,091.12 × 1,545.08
  4. Step 4: Simplify right side
    3,393.90x = 7,866,162.23
  5. Step 5: Solve for x
    x = 7,866,162.23/3,393.90
  6. Step 6: Final answer
    x = 2,317.74

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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.