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Finding the Fourth Proportional to 4,972.79, 7,458.63 and 1,275.11

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Solution

The fourth proportional to 4,972.79, 7,458.63 and 1,275.11 is: 1,912.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,972.79 : 7,458.63 = 1,275.11 : x
  2. Step 2: Convert to fraction form
    4,972.79/7,458.63 = 1,275.11/x
  3. Step 3: Cross multiply
    4,972.79x = 7,458.63 × 1,275.11
  4. Step 4: Simplify right side
    4,972.79x = 9,510,580.75
  5. Step 5: Solve for x
    x = 9,510,580.75/4,972.79
  6. Step 6: Final answer
    x = 1,912.52

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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.