Home / 5,426.72-8,140.40-1,964.32

Finding the Fourth Proportional to 5,426.72, 8,140.40 and 1,964.32

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Solution

The fourth proportional to 5,426.72, 8,140.40 and 1,964.32 is: 2,946.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,426.72 : 8,140.40 = 1,964.32 : x
  2. Step 2: Convert to fraction form
    5,426.72/8,140.40 = 1,964.32/x
  3. Step 3: Cross multiply
    5,426.72x = 8,140.40 × 1,964.32
  4. Step 4: Simplify right side
    5,426.72x = 15,990,350.53
  5. Step 5: Solve for x
    x = 15,990,350.53/5,426.72
  6. Step 6: Final answer
    x = 2,946.60

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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.