Home / 8,590.90-12,886.68-2,668.40

Finding the Fourth Proportional to 8,590.90, 12,886.68 and 2,668.40

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Solution

The fourth proportional to 8,590.90, 12,886.68 and 2,668.40 is: 4,002.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,590.90 : 12,886.68 = 2,668.40 : x
  2. Step 2: Convert to fraction form
    8,590.90/12,886.68 = 2,668.40/x
  3. Step 3: Cross multiply
    8,590.90x = 12,886.68 × 2,668.40
  4. Step 4: Simplify right side
    8,590.90x = 34,386,816.91
  5. Step 5: Solve for x
    x = 34,386,816.91/8,590.90
  6. Step 6: Final answer
    x = 4,002.70

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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.