Home / 7,215.06-9,955.08-4,231.20

Finding the Fourth Proportional to 7,215.06, 9,955.08 and 4,231.20

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Solution

The fourth proportional to 7,215.06, 9,955.08 and 4,231.20 is: 5,838.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,215.06 : 9,955.08 = 4,231.20 : x
  2. Step 2: Convert to fraction form
    7,215.06/9,955.08 = 4,231.20/x
  3. Step 3: Cross multiply
    7,215.06x = 9,955.08 × 4,231.20
  4. Step 4: Simplify right side
    7,215.06x = 42,121,934.50
  5. Step 5: Solve for x
    x = 42,121,934.50/7,215.06
  6. Step 6: Final answer
    x = 5,838.06

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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.