Home / 6,445.60-9,670.70-3,977.55

Finding the Fourth Proportional to 6,445.60, 9,670.70 and 3,977.55

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Solution

The fourth proportional to 6,445.60, 9,670.70 and 3,977.55 is: 5,967.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,445.60 : 9,670.70 = 3,977.55 : x
  2. Step 2: Convert to fraction form
    6,445.60/9,670.70 = 3,977.55/x
  3. Step 3: Cross multiply
    6,445.60x = 9,670.70 × 3,977.55
  4. Step 4: Simplify right side
    6,445.60x = 38,465,692.79
  5. Step 5: Solve for x
    x = 38,465,692.79/6,445.60
  6. Step 6: Final answer
    x = 5,967.74

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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.