Home / 7,081.17-10,620.90-1,887.45

Finding the Fourth Proportional to 7,081.17, 10,620.90 and 1,887.45

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Solution

The fourth proportional to 7,081.17, 10,620.90 and 1,887.45 is: 2,830.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,081.17 : 10,620.90 = 1,887.45 : x
  2. Step 2: Convert to fraction form
    7,081.17/10,620.90 = 1,887.45/x
  3. Step 3: Cross multiply
    7,081.17x = 10,620.90 × 1,887.45
  4. Step 4: Simplify right side
    7,081.17x = 20,046,417.71
  5. Step 5: Solve for x
    x = 20,046,417.71/7,081.17
  6. Step 6: Final answer
    x = 2,830.95

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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.