Home / 7,261.60-10,868.10-6,386.80

Finding the Fourth Proportional to 7,261.60, 10,868.10 and 6,386.80

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Solution

The fourth proportional to 7,261.60, 10,868.10 and 6,386.80 is: 9,558.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,261.60 : 10,868.10 = 6,386.80 : x
  2. Step 2: Convert to fraction form
    7,261.60/10,868.10 = 6,386.80/x
  3. Step 3: Cross multiply
    7,261.60x = 10,868.10 × 6,386.80
  4. Step 4: Simplify right side
    7,261.60x = 69,412,381.08
  5. Step 5: Solve for x
    x = 69,412,381.08/7,261.60
  6. Step 6: Final answer
    x = 9,558.83

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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.