Home / 4,920.30-7,378.02-2,145.77

Finding the Fourth Proportional to 4,920.30, 7,378.02 and 2,145.77

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Solution

The fourth proportional to 4,920.30, 7,378.02 and 2,145.77 is: 3,217.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,920.30 : 7,378.02 = 2,145.77 : x
  2. Step 2: Convert to fraction form
    4,920.30/7,378.02 = 2,145.77/x
  3. Step 3: Cross multiply
    4,920.30x = 7,378.02 × 2,145.77
  4. Step 4: Simplify right side
    4,920.30x = 15,831,557.78
  5. Step 5: Solve for x
    x = 15,831,557.78/4,920.30
  6. Step 6: Final answer
    x = 3,217.60

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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.