Home / 9,219.67-12,723.59-5,187.76

Finding the Fourth Proportional to 9,219.67, 12,723.59 and 5,187.76

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Solution

The fourth proportional to 9,219.67, 12,723.59 and 5,187.76 is: 7,159.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,219.67 : 12,723.59 = 5,187.76 : x
  2. Step 2: Convert to fraction form
    9,219.67/12,723.59 = 5,187.76/x
  3. Step 3: Cross multiply
    9,219.67x = 12,723.59 × 5,187.76
  4. Step 4: Simplify right side
    9,219.67x = 66,006,931.26
  5. Step 5: Solve for x
    x = 66,006,931.26/9,219.67
  6. Step 6: Final answer
    x = 7,159.36

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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.