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Finding the Fourth Proportional to 2,995.39, 4,493.08 and 915.40

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Solution

The fourth proportional to 2,995.39, 4,493.08 and 915.40 is: 1,373.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,995.39 : 4,493.08 = 915.40 : x
  2. Step 2: Convert to fraction form
    2,995.39/4,493.08 = 915.40/x
  3. Step 3: Cross multiply
    2,995.39x = 4,493.08 × 915.40
  4. Step 4: Simplify right side
    2,995.39x = 4,112,965.43
  5. Step 5: Solve for x
    x = 4,112,965.43/2,995.39
  6. Step 6: Final answer
    x = 1,373.10

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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.