Home / 7,421.34-11,122.38-5,557.80

Finding the Fourth Proportional to 7,421.34, 11,122.38 and 5,557.80

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Solution

The fourth proportional to 7,421.34, 11,122.38 and 5,557.80 is: 8,329.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,421.34 : 11,122.38 = 5,557.80 : x
  2. Step 2: Convert to fraction form
    7,421.34/11,122.38 = 5,557.80/x
  3. Step 3: Cross multiply
    7,421.34x = 11,122.38 × 5,557.80
  4. Step 4: Simplify right side
    7,421.34x = 61,815,963.56
  5. Step 5: Solve for x
    x = 61,815,963.56/7,421.34
  6. Step 6: Final answer
    x = 8,329.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.