Home / 7,219.10-9,940.15-6,154.49

Finding the Fourth Proportional to 7,219.10, 9,940.15 and 6,154.49

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Solution

The fourth proportional to 7,219.10, 9,940.15 and 6,154.49 is: 8,474.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,219.10 : 9,940.15 = 6,154.49 : x
  2. Step 2: Convert to fraction form
    7,219.10/9,940.15 = 6,154.49/x
  3. Step 3: Cross multiply
    7,219.10x = 9,940.15 × 6,154.49
  4. Step 4: Simplify right side
    7,219.10x = 61,176,553.77
  5. Step 5: Solve for x
    x = 61,176,553.77/7,219.10
  6. Step 6: Final answer
    x = 8,474.26

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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.