Home / 8,946.40-12,345.68-5,168.96

Finding the Fourth Proportional to 8,946.40, 12,345.68 and 5,168.96

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Solution

The fourth proportional to 8,946.40, 12,345.68 and 5,168.96 is: 7,132.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,946.40 : 12,345.68 = 5,168.96 : x
  2. Step 2: Convert to fraction form
    8,946.40/12,345.68 = 5,168.96/x
  3. Step 3: Cross multiply
    8,946.40x = 12,345.68 × 5,168.96
  4. Step 4: Simplify right side
    8,946.40x = 63,814,326.09
  5. Step 5: Solve for x
    x = 63,814,326.09/8,946.40
  6. Step 6: Final answer
    x = 7,132.96

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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.