Home / 2,920.19-4,378.20-1,458.30

Finding the Fourth Proportional to 2,920.19, 4,378.20 and 1,458.30

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Solution

The fourth proportional to 2,920.19, 4,378.20 and 1,458.30 is: 2,186.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,920.19 : 4,378.20 = 1,458.30 : x
  2. Step 2: Convert to fraction form
    2,920.19/4,378.20 = 1,458.30/x
  3. Step 3: Cross multiply
    2,920.19x = 4,378.20 × 1,458.30
  4. Step 4: Simplify right side
    2,920.19x = 6,384,729.06
  5. Step 5: Solve for x
    x = 6,384,729.06/2,920.19
  6. Step 6: Final answer
    x = 2,186.41

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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.