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Finding the Fourth Proportional to 3,115.79, 4,674.15 and 924.26

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Solution

The fourth proportional to 3,115.79, 4,674.15 and 924.26 is: 1,386.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.79 : 4,674.15 = 924.26 : x
  2. Step 2: Convert to fraction form
    3,115.79/4,674.15 = 924.26/x
  3. Step 3: Cross multiply
    3,115.79x = 4,674.15 × 924.26
  4. Step 4: Simplify right side
    3,115.79x = 4,320,129.88
  5. Step 5: Solve for x
    x = 4,320,129.88/3,115.79
  6. Step 6: Final answer
    x = 1,386.53

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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.