Home / 7,215.60-9,957.66-4,071.18

Finding the Fourth Proportional to 7,215.60, 9,957.66 and 4,071.18

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Solution

The fourth proportional to 7,215.60, 9,957.66 and 4,071.18 is: 5,618.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,215.60 : 9,957.66 = 4,071.18 : x
  2. Step 2: Convert to fraction form
    7,215.60/9,957.66 = 4,071.18/x
  3. Step 3: Cross multiply
    7,215.60x = 9,957.66 × 4,071.18
  4. Step 4: Simplify right side
    7,215.60x = 40,539,426.24
  5. Step 5: Solve for x
    x = 40,539,426.24/7,215.60
  6. Step 6: Final answer
    x = 5,618.30

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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.