Home / 9,219.70-12,719.90-5,440.97

Finding the Fourth Proportional to 9,219.70, 12,719.90 and 5,440.97

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Solution

The fourth proportional to 9,219.70, 12,719.90 and 5,440.97 is: 7,506.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,219.70 : 12,719.90 = 5,440.97 : x
  2. Step 2: Convert to fraction form
    9,219.70/12,719.90 = 5,440.97/x
  3. Step 3: Cross multiply
    9,219.70x = 12,719.90 × 5,440.97
  4. Step 4: Simplify right side
    9,219.70x = 69,208,567.10
  5. Step 5: Solve for x
    x = 69,208,567.10/9,219.70
  6. Step 6: Final answer
    x = 7,506.60

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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.