Home / 2,220.61-3,064.47-1,225.87

Finding the Fourth Proportional to 2,220.61, 3,064.47 and 1,225.87

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Solution

The fourth proportional to 2,220.61, 3,064.47 and 1,225.87 is: 1,691.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.61 : 3,064.47 = 1,225.87 : x
  2. Step 2: Convert to fraction form
    2,220.61/3,064.47 = 1,225.87/x
  3. Step 3: Cross multiply
    2,220.61x = 3,064.47 × 1,225.87
  4. Step 4: Simplify right side
    2,220.61x = 3,756,641.84
  5. Step 5: Solve for x
    x = 3,756,641.84/2,220.61
  6. Step 6: Final answer
    x = 1,691.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.