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Finding the Fourth Proportional to 4,885.61, 6,742.17 and 2,897.15

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Solution

The fourth proportional to 4,885.61, 6,742.17 and 2,897.15 is: 3,998.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,885.61 : 6,742.17 = 2,897.15 : x
  2. Step 2: Convert to fraction form
    4,885.61/6,742.17 = 2,897.15/x
  3. Step 3: Cross multiply
    4,885.61x = 6,742.17 × 2,897.15
  4. Step 4: Simplify right side
    4,885.61x = 19,533,044.10
  5. Step 5: Solve for x
    x = 19,533,044.10/4,885.61
  6. Step 6: Final answer
    x = 3,998.08

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1.5x scale

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.