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Finding the Fourth Proportional to 2,666.12, 3,999.16 and 934.32

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Solution

The fourth proportional to 2,666.12, 3,999.16 and 934.32 is: 1,401.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,666.12 : 3,999.16 = 934.32 : x
  2. Step 2: Convert to fraction form
    2,666.12/3,999.16 = 934.32/x
  3. Step 3: Cross multiply
    2,666.12x = 3,999.16 × 934.32
  4. Step 4: Simplify right side
    2,666.12x = 3,736,495.17
  5. Step 5: Solve for x
    x = 3,736,495.17/2,666.12
  6. Step 6: Final answer
    x = 1,401.47

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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.