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Finding the Fourth Proportional to 4,908.57, 7,362.84 and 1,988.91

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Solution

The fourth proportional to 4,908.57, 7,362.84 and 1,988.91 is: 2,983.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,908.57 : 7,362.84 = 1,988.91 : x
  2. Step 2: Convert to fraction form
    4,908.57/7,362.84 = 1,988.91/x
  3. Step 3: Cross multiply
    4,908.57x = 7,362.84 × 1,988.91
  4. Step 4: Simplify right side
    4,908.57x = 14,644,026.10
  5. Step 5: Solve for x
    x = 14,644,026.10/4,908.57
  6. Step 6: Final answer
    x = 2,983.36

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1.5x scale

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.