Home / 4,280.29-6,420.57-1,908.61

Finding the Fourth Proportional to 4,280.29, 6,420.57 and 1,908.61

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Solution

The fourth proportional to 4,280.29, 6,420.57 and 1,908.61 is: 2,862.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,280.29 : 6,420.57 = 1,908.61 : x
  2. Step 2: Convert to fraction form
    4,280.29/6,420.57 = 1,908.61/x
  3. Step 3: Cross multiply
    4,280.29x = 6,420.57 × 1,908.61
  4. Step 4: Simplify right side
    4,280.29x = 12,254,364.11
  5. Step 5: Solve for x
    x = 12,254,364.11/4,280.29
  6. Step 6: Final answer
    x = 2,862.98

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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.