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Finding the Fourth Proportional to 4,983.72, 6,875.16 and 2,990.76

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Solution

The fourth proportional to 4,983.72, 6,875.16 and 2,990.76 is: 4,125.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,983.72 : 6,875.16 = 2,990.76 : x
  2. Step 2: Convert to fraction form
    4,983.72/6,875.16 = 2,990.76/x
  3. Step 3: Cross multiply
    4,983.72x = 6,875.16 × 2,990.76
  4. Step 4: Simplify right side
    4,983.72x = 20,561,953.52
  5. Step 5: Solve for x
    x = 20,561,953.52/4,983.72
  6. Step 6: Final answer
    x = 4,125.82

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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.