Home / 5,071.28-7,000.88-3,185.60

Finding the Fourth Proportional to 5,071.28, 7,000.88 and 3,185.60

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Solution

The fourth proportional to 5,071.28, 7,000.88 and 3,185.60 is: 4,397.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,071.28 : 7,000.88 = 3,185.60 : x
  2. Step 2: Convert to fraction form
    5,071.28/7,000.88 = 3,185.60/x
  3. Step 3: Cross multiply
    5,071.28x = 7,000.88 × 3,185.60
  4. Step 4: Simplify right side
    5,071.28x = 22,301,952.40
  5. Step 5: Solve for x
    x = 22,301,952.40/5,071.28
  6. Step 6: Final answer
    x = 4,397.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.