Home / 5,380.81-8,070.98-1,485.11

Finding the Fourth Proportional to 5,380.81, 8,070.98 and 1,485.11

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Solution

The fourth proportional to 5,380.81, 8,070.98 and 1,485.11 is: 2,227.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,380.81 : 8,070.98 = 1,485.11 : x
  2. Step 2: Convert to fraction form
    5,380.81/8,070.98 = 1,485.11/x
  3. Step 3: Cross multiply
    5,380.81x = 8,070.98 × 1,485.11
  4. Step 4: Simplify right side
    5,380.81x = 11,986,305.86
  5. Step 5: Solve for x
    x = 11,986,305.86/5,380.81
  6. Step 6: Final answer
    x = 2,227.60

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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.