Home / 8,586.20-12,879.30-7,225.40

Finding the Fourth Proportional to 8,586.20, 12,879.30 and 7,225.40

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Solution

The fourth proportional to 8,586.20, 12,879.30 and 7,225.40 is: 10,838.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,586.20 : 12,879.30 = 7,225.40 : x
  2. Step 2: Convert to fraction form
    8,586.20/12,879.30 = 7,225.40/x
  3. Step 3: Cross multiply
    8,586.20x = 12,879.30 × 7,225.40
  4. Step 4: Simplify right side
    8,586.20x = 93,058,094.22
  5. Step 5: Solve for x
    x = 93,058,094.22/8,586.20
  6. Step 6: Final answer
    x = 10,838.10

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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.