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Finding the Fourth Proportional to 4,983.18, 6,874.50 and 2,990.31

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Solution

The fourth proportional to 4,983.18, 6,874.50 and 2,990.31 is: 4,125.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,983.18 : 6,874.50 = 2,990.31 : x
  2. Step 2: Convert to fraction form
    4,983.18/6,874.50 = 2,990.31/x
  3. Step 3: Cross multiply
    4,983.18x = 6,874.50 × 2,990.31
  4. Step 4: Simplify right side
    4,983.18x = 20,556,886.10
  5. Step 5: Solve for x
    x = 20,556,886.10/4,983.18
  6. Step 6: Final answer
    x = 4,125.25

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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.