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Finding the Fourth Proportional to 4,944.16, 7,419.12 and 1,866.40

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Solution

The fourth proportional to 4,944.16, 7,419.12 and 1,866.40 is: 2,800.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,944.16 : 7,419.12 = 1,866.40 : x
  2. Step 2: Convert to fraction form
    4,944.16/7,419.12 = 1,866.40/x
  3. Step 3: Cross multiply
    4,944.16x = 7,419.12 × 1,866.40
  4. Step 4: Simplify right side
    4,944.16x = 13,847,045.57
  5. Step 5: Solve for x
    x = 13,847,045.57/4,944.16
  6. Step 6: Final answer
    x = 2,800.69

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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.