Home / 7,781.02-11,668.98-2,585.50

Finding the Fourth Proportional to 7,781.02, 11,668.98 and 2,585.50

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Solution

The fourth proportional to 7,781.02, 11,668.98 and 2,585.50 is: 3,877.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,781.02 : 11,668.98 = 2,585.50 : x
  2. Step 2: Convert to fraction form
    7,781.02/11,668.98 = 2,585.50/x
  3. Step 3: Cross multiply
    7,781.02x = 11,668.98 × 2,585.50
  4. Step 4: Simplify right side
    7,781.02x = 30,170,147.79
  5. Step 5: Solve for x
    x = 30,170,147.79/7,781.02
  6. Step 6: Final answer
    x = 3,877.40

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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.