Home / 4,988.61-7,478.35-2,215.83

Finding the Fourth Proportional to 4,988.61, 7,478.35 and 2,215.83

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Solution

The fourth proportional to 4,988.61, 7,478.35 and 2,215.83 is: 3,321.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,988.61 : 7,478.35 = 2,215.83 : x
  2. Step 2: Convert to fraction form
    4,988.61/7,478.35 = 2,215.83/x
  3. Step 3: Cross multiply
    4,988.61x = 7,478.35 × 2,215.83
  4. Step 4: Simplify right side
    4,988.61x = 16,570,746.74
  5. Step 5: Solve for x
    x = 16,570,746.74/4,988.61
  6. Step 6: Final answer
    x = 3,321.72

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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.