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Finding the Fourth Proportional to 2,876.84, 4,316.07 and 929.20

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Solution

The fourth proportional to 2,876.84, 4,316.07 and 929.20 is: 1,394.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,876.84 : 4,316.07 = 929.20 : x
  2. Step 2: Convert to fraction form
    2,876.84/4,316.07 = 929.20/x
  3. Step 3: Cross multiply
    2,876.84x = 4,316.07 × 929.20
  4. Step 4: Simplify right side
    2,876.84x = 4,010,492.24
  5. Step 5: Solve for x
    x = 4,010,492.24/2,876.84
  6. Step 6: Final answer
    x = 1,394.06

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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.