Home / 7,215.26-9,956.86-4,071.20

Finding the Fourth Proportional to 7,215.26, 9,956.86 and 4,071.20

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Solution

The fourth proportional to 7,215.26, 9,956.86 and 4,071.20 is: 5,618.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,215.26 : 9,956.86 = 4,071.20 : x
  2. Step 2: Convert to fraction form
    7,215.26/9,956.86 = 4,071.20/x
  3. Step 3: Cross multiply
    7,215.26x = 9,956.86 × 4,071.20
  4. Step 4: Simplify right side
    7,215.26x = 40,536,368.43
  5. Step 5: Solve for x
    x = 40,536,368.43/7,215.26
  6. Step 6: Final answer
    x = 5,618.14

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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.