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Finding the Fourth Proportional to 2,988.13, 4,482.21 and 936.13

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Solution

The fourth proportional to 2,988.13, 4,482.21 and 936.13 is: 1,404.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,988.13 : 4,482.21 = 936.13 : x
  2. Step 2: Convert to fraction form
    2,988.13/4,482.21 = 936.13/x
  3. Step 3: Cross multiply
    2,988.13x = 4,482.21 × 936.13
  4. Step 4: Simplify right side
    2,988.13x = 4,195,931.25
  5. Step 5: Solve for x
    x = 4,195,931.25/2,988.13
  6. Step 6: Final answer
    x = 1,404.20

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Similar ratio
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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.