Home / 4,881.60-7,320.24-1,419.12

Finding the Fourth Proportional to 4,881.60, 7,320.24 and 1,419.12

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Solution

The fourth proportional to 4,881.60, 7,320.24 and 1,419.12 is: 2,128.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,881.60 : 7,320.24 = 1,419.12 : x
  2. Step 2: Convert to fraction form
    4,881.60/7,320.24 = 1,419.12/x
  3. Step 3: Cross multiply
    4,881.60x = 7,320.24 × 1,419.12
  4. Step 4: Simplify right side
    4,881.60x = 10,388,298.99
  5. Step 5: Solve for x
    x = 10,388,298.99/4,881.60
  6. Step 6: Final answer
    x = 2,128.05

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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.