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Finding the Fourth Proportional to 4,944.78, 7,416.90 and 1,247.01

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Solution

The fourth proportional to 4,944.78, 7,416.90 and 1,247.01 is: 1,870.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,944.78 : 7,416.90 = 1,247.01 : x
  2. Step 2: Convert to fraction form
    4,944.78/7,416.90 = 1,247.01/x
  3. Step 3: Cross multiply
    4,944.78x = 7,416.90 × 1,247.01
  4. Step 4: Simplify right side
    4,944.78x = 9,248,948.47
  5. Step 5: Solve for x
    x = 9,248,948.47/4,944.78
  6. Step 6: Final answer
    x = 1,870.45

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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.