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Finding the Fourth Proportional to 2,478.61, 3,717.51 and 835.12

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Solution

The fourth proportional to 2,478.61, 3,717.51 and 835.12 is: 1,252.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,478.61 : 3,717.51 = 835.12 : x
  2. Step 2: Convert to fraction form
    2,478.61/3,717.51 = 835.12/x
  3. Step 3: Cross multiply
    2,478.61x = 3,717.51 × 835.12
  4. Step 4: Simplify right side
    2,478.61x = 3,104,566.95
  5. Step 5: Solve for x
    x = 3,104,566.95/2,478.61
  6. Step 6: Final answer
    x = 1,252.54

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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.