Home / 8,289.81-12,418.07-4,117.20

Finding the Fourth Proportional to 8,289.81, 12,418.07 and 4,117.20

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Solution

The fourth proportional to 8,289.81, 12,418.07 and 4,117.20 is: 6,167.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,289.81 : 12,418.07 = 4,117.20 : x
  2. Step 2: Convert to fraction form
    8,289.81/12,418.07 = 4,117.20/x
  3. Step 3: Cross multiply
    8,289.81x = 12,418.07 × 4,117.20
  4. Step 4: Simplify right side
    8,289.81x = 51,127,657.22
  5. Step 5: Solve for x
    x = 51,127,657.22/8,289.81
  6. Step 6: Final answer
    x = 6,167.53

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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.