Home / 4,628.71-6,387.46-2,639.90

Finding the Fourth Proportional to 4,628.71, 6,387.46 and 2,639.90

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Solution

The fourth proportional to 4,628.71, 6,387.46 and 2,639.90 is: 3,642.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,628.71 : 6,387.46 = 2,639.90 : x
  2. Step 2: Convert to fraction form
    4,628.71/6,387.46 = 2,639.90/x
  3. Step 3: Cross multiply
    4,628.71x = 6,387.46 × 2,639.90
  4. Step 4: Simplify right side
    4,628.71x = 16,862,275.83
  5. Step 5: Solve for x
    x = 16,862,275.83/4,628.71
  6. Step 6: Final answer
    x = 3,642.98

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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.