Home / 3,381.13-5,071.09-915.63

Finding the Fourth Proportional to 3,381.13, 5,071.09 and 915.63

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Solution

The fourth proportional to 3,381.13, 5,071.09 and 915.63 is: 1,373.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,381.13 : 5,071.09 = 915.63 : x
  2. Step 2: Convert to fraction form
    3,381.13/5,071.09 = 915.63/x
  3. Step 3: Cross multiply
    3,381.13x = 5,071.09 × 915.63
  4. Step 4: Simplify right side
    3,381.13x = 4,643,242.14
  5. Step 5: Solve for x
    x = 4,643,242.14/3,381.13
  6. Step 6: Final answer
    x = 1,373.28

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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.