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Finding the Fourth Proportional to 2,632.08, 3,947.04 and 988.32

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Solution

The fourth proportional to 2,632.08, 3,947.04 and 988.32 is: 1,482.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,632.08 : 3,947.04 = 988.32 : x
  2. Step 2: Convert to fraction form
    2,632.08/3,947.04 = 988.32/x
  3. Step 3: Cross multiply
    2,632.08x = 3,947.04 × 988.32
  4. Step 4: Simplify right side
    2,632.08x = 3,900,938.57
  5. Step 5: Solve for x
    x = 3,900,938.57/2,632.08
  6. Step 6: Final answer
    x = 1,482.07

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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.