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Finding the Fourth Proportional to 11,612.85, 17,416.95 and 4,948.07

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Solution

The fourth proportional to 11,612.85, 17,416.95 and 4,948.07 is: 7,421.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,612.85 : 17,416.95 = 4,948.07 : x
  2. Step 2: Convert to fraction form
    11,612.85/17,416.95 = 4,948.07/x
  3. Step 3: Cross multiply
    11,612.85x = 17,416.95 × 4,948.07
  4. Step 4: Simplify right side
    11,612.85x = 86,180,287.79
  5. Step 5: Solve for x
    x = 86,180,287.79/11,612.85
  6. Step 6: Final answer
    x = 7,421.11

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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.