Home / 4,387.15-6,580.85-1,920.70

Finding the Fourth Proportional to 4,387.15, 6,580.85 and 1,920.70

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Solution

The fourth proportional to 4,387.15, 6,580.85 and 1,920.70 is: 2,881.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,387.15 : 6,580.85 = 1,920.70 : x
  2. Step 2: Convert to fraction form
    4,387.15/6,580.85 = 1,920.70/x
  3. Step 3: Cross multiply
    4,387.15x = 6,580.85 × 1,920.70
  4. Step 4: Simplify right side
    4,387.15x = 12,639,838.60
  5. Step 5: Solve for x
    x = 12,639,838.60/4,387.15
  6. Step 6: Final answer
    x = 2,881.10

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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.