Home / 2,545.40-3,818.35-879.29

Finding the Fourth Proportional to 2,545.40, 3,818.35 and 879.29

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Solution

The fourth proportional to 2,545.40, 3,818.35 and 879.29 is: 1,319.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,545.40 : 3,818.35 = 879.29 : x
  2. Step 2: Convert to fraction form
    2,545.40/3,818.35 = 879.29/x
  3. Step 3: Cross multiply
    2,545.40x = 3,818.35 × 879.29
  4. Step 4: Simplify right side
    2,545.40x = 3,357,444.32
  5. Step 5: Solve for x
    x = 3,357,444.32/2,545.40
  6. Step 6: Final answer
    x = 1,319.03

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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.