Home / 10,205.17-15,305.74-2,807.72

Finding the Fourth Proportional to 10,205.17, 15,305.74 and 2,807.72

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Solution

The fourth proportional to 10,205.17, 15,305.74 and 2,807.72 is: 4,211.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,205.17 : 15,305.74 = 2,807.72 : x
  2. Step 2: Convert to fraction form
    10,205.17/15,305.74 = 2,807.72/x
  3. Step 3: Cross multiply
    10,205.17x = 15,305.74 × 2,807.72
  4. Step 4: Simplify right side
    10,205.17x = 42,974,232.31
  5. Step 5: Solve for x
    x = 42,974,232.31/10,205.17
  6. Step 6: Final answer
    x = 4,211.03

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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.