Home / 9,291.90-12,821.85-5,514.87

Finding the Fourth Proportional to 9,291.90, 12,821.85 and 5,514.87

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Solution

The fourth proportional to 9,291.90, 12,821.85 and 5,514.87 is: 7,609.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,291.90 : 12,821.85 = 5,514.87 : x
  2. Step 2: Convert to fraction form
    9,291.90/12,821.85 = 5,514.87/x
  3. Step 3: Cross multiply
    9,291.90x = 12,821.85 × 5,514.87
  4. Step 4: Simplify right side
    9,291.90x = 70,710,835.91
  5. Step 5: Solve for x
    x = 70,710,835.91/9,291.90
  6. Step 6: Final answer
    x = 7,609.94

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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.