Home / 8,897.63-12,278.35-5,120.92

Finding the Fourth Proportional to 8,897.63, 12,278.35 and 5,120.92

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Solution

The fourth proportional to 8,897.63, 12,278.35 and 5,120.92 is: 7,066.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,897.63 : 12,278.35 = 5,120.92 : x
  2. Step 2: Convert to fraction form
    8,897.63/12,278.35 = 5,120.92/x
  3. Step 3: Cross multiply
    8,897.63x = 12,278.35 × 5,120.92
  4. Step 4: Simplify right side
    8,897.63x = 62,876,448.23
  5. Step 5: Solve for x
    x = 62,876,448.23/8,897.63
  6. Step 6: Final answer
    x = 7,066.65

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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.