Home / 9,121.77-12,569.45-6,290.01

Finding the Fourth Proportional to 9,121.77, 12,569.45 and 6,290.01

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Solution

The fourth proportional to 9,121.77, 12,569.45 and 6,290.01 is: 8,667.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,121.77 : 12,569.45 = 6,290.01 : x
  2. Step 2: Convert to fraction form
    9,121.77/12,569.45 = 6,290.01/x
  3. Step 3: Cross multiply
    9,121.77x = 12,569.45 × 6,290.01
  4. Step 4: Simplify right side
    9,121.77x = 79,061,934.74
  5. Step 5: Solve for x
    x = 79,061,934.74/9,121.77
  6. Step 6: Final answer
    x = 8,667.39

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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.