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Finding the Fourth Proportional to 8,570.05, 12,844.49 and 3,888.74

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Solution

The fourth proportional to 8,570.05, 12,844.49 and 3,888.74 is: 5,828.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,570.05 : 12,844.49 = 3,888.74 : x
  2. Step 2: Convert to fraction form
    8,570.05/12,844.49 = 3,888.74/x
  3. Step 3: Cross multiply
    8,570.05x = 12,844.49 × 3,888.74
  4. Step 4: Simplify right side
    8,570.05x = 49,948,894.71
  5. Step 5: Solve for x
    x = 49,948,894.71/8,570.05
  6. Step 6: Final answer
    x = 5,828.31

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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.