Home / 2,419.64-3,339.05-1,578.75

Finding the Fourth Proportional to 2,419.64, 3,339.05 and 1,578.75

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Solution

The fourth proportional to 2,419.64, 3,339.05 and 1,578.75 is: 2,178.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,419.64 : 3,339.05 = 1,578.75 : x
  2. Step 2: Convert to fraction form
    2,419.64/3,339.05 = 1,578.75/x
  3. Step 3: Cross multiply
    2,419.64x = 3,339.05 × 1,578.75
  4. Step 4: Simplify right side
    2,419.64x = 5,271,525.19
  5. Step 5: Solve for x
    x = 5,271,525.19/2,419.64
  6. Step 6: Final answer
    x = 2,178.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.