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Finding the Fourth Proportional to 8,595.72, 11,862 and 7,890.42

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Solution

The fourth proportional to 8,595.72, 11,862 and 7,890.42 is: 10,888.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,595.72 : 11,862 = 7,890.42 : x
  2. Step 2: Convert to fraction form
    8,595.72/11,862 = 7,890.42/x
  3. Step 3: Cross multiply
    8,595.72x = 11,862 × 7,890.42
  4. Step 4: Simplify right side
    8,595.72x = 93,596,162.04
  5. Step 5: Solve for x
    x = 93,596,162.04/8,595.72
  6. Step 6: Final answer
    x = 10,888.69

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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.