Home / 2,880.09-4,320.63-1,419.39

Finding the Fourth Proportional to 2,880.09, 4,320.63 and 1,419.39

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Solution

The fourth proportional to 2,880.09, 4,320.63 and 1,419.39 is: 2,129.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,880.09 : 4,320.63 = 1,419.39 : x
  2. Step 2: Convert to fraction form
    2,880.09/4,320.63 = 1,419.39/x
  3. Step 3: Cross multiply
    2,880.09x = 4,320.63 × 1,419.39
  4. Step 4: Simplify right side
    2,880.09x = 6,132,659.02
  5. Step 5: Solve for x
    x = 6,132,659.02/2,880.09
  6. Step 6: Final answer
    x = 2,129.33

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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.