Home / 8,939.16-12,336.36-5,401.68

Finding the Fourth Proportional to 8,939.16, 12,336.36 and 5,401.68

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Solution

The fourth proportional to 8,939.16, 12,336.36 and 5,401.68 is: 7,454.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,939.16 : 12,336.36 = 5,401.68 : x
  2. Step 2: Convert to fraction form
    8,939.16/12,336.36 = 5,401.68/x
  3. Step 3: Cross multiply
    8,939.16x = 12,336.36 × 5,401.68
  4. Step 4: Simplify right side
    8,939.16x = 66,637,069.08
  5. Step 5: Solve for x
    x = 66,637,069.08/8,939.16
  6. Step 6: Final answer
    x = 7,454.52

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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.