Home / 2,545.35-3,818.14-790.40

Finding the Fourth Proportional to 2,545.35, 3,818.14 and 790.40

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Solution

The fourth proportional to 2,545.35, 3,818.14 and 790.40 is: 1,185.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,545.35 : 3,818.14 = 790.40 : x
  2. Step 2: Convert to fraction form
    2,545.35/3,818.14 = 790.40/x
  3. Step 3: Cross multiply
    2,545.35x = 3,818.14 × 790.40
  4. Step 4: Simplify right side
    2,545.35x = 3,017,838.58
  5. Step 5: Solve for x
    x = 3,017,838.58/2,545.35
  6. Step 6: Final answer
    x = 1,185.63

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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.