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Finding the Fourth Proportional to 7,854.62, 10,836.65 and 4,869.36

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Solution

The fourth proportional to 7,854.62, 10,836.65 and 4,869.36 is: 6,718.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,854.62 : 10,836.65 = 4,869.36 : x
  2. Step 2: Convert to fraction form
    7,854.62/10,836.65 = 4,869.36/x
  3. Step 3: Cross multiply
    7,854.62x = 10,836.65 × 4,869.36
  4. Step 4: Simplify right side
    7,854.62x = 52,767,525.70
  5. Step 5: Solve for x
    x = 52,767,525.70/7,854.62
  6. Step 6: Final answer
    x = 6,718.03

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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.