Home / 8,263.40-12,359.10-7,392.20

Finding the Fourth Proportional to 8,263.40, 12,359.10 and 7,392.20

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Solution

The fourth proportional to 8,263.40, 12,359.10 and 7,392.20 is: 11,056.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,263.40 : 12,359.10 = 7,392.20 : x
  2. Step 2: Convert to fraction form
    8,263.40/12,359.10 = 7,392.20/x
  3. Step 3: Cross multiply
    8,263.40x = 12,359.10 × 7,392.20
  4. Step 4: Simplify right side
    8,263.40x = 91,360,939.02
  5. Step 5: Solve for x
    x = 91,360,939.02/8,263.40
  6. Step 6: Final answer
    x = 11,056.10

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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.