Home / 6,421.46-8,861.55-4,065.53

Finding the Fourth Proportional to 6,421.46, 8,861.55 and 4,065.53

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Solution

The fourth proportional to 6,421.46, 8,861.55 and 4,065.53 is: 5,610.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,421.46 : 8,861.55 = 4,065.53 : x
  2. Step 2: Convert to fraction form
    6,421.46/8,861.55 = 4,065.53/x
  3. Step 3: Cross multiply
    6,421.46x = 8,861.55 × 4,065.53
  4. Step 4: Simplify right side
    6,421.46x = 36,026,897.37
  5. Step 5: Solve for x
    x = 36,026,897.37/6,421.46
  6. Step 6: Final answer
    x = 5,610.39

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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.