Home / 9,403.20-12,977.80-5,423.54

Finding the Fourth Proportional to 9,403.20, 12,977.80 and 5,423.54

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Solution

The fourth proportional to 9,403.20, 12,977.80 and 5,423.54 is: 7,485.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,403.20 : 12,977.80 = 5,423.54 : x
  2. Step 2: Convert to fraction form
    9,403.20/12,977.80 = 5,423.54/x
  3. Step 3: Cross multiply
    9,403.20x = 12,977.80 × 5,423.54
  4. Step 4: Simplify right side
    9,403.20x = 70,385,538.96
  5. Step 5: Solve for x
    x = 70,385,538.96/9,403.20
  6. Step 6: Final answer
    x = 7,485.28

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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.