Home / 2,215.08-3,299.40-2,102.76

Finding the Fourth Proportional to 2,215.08, 3,299.40 and 2,102.76

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Solution

The fourth proportional to 2,215.08, 3,299.40 and 2,102.76 is: 3,132.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,215.08 : 3,299.40 = 2,102.76 : x
  2. Step 2: Convert to fraction form
    2,215.08/3,299.40 = 2,102.76/x
  3. Step 3: Cross multiply
    2,215.08x = 3,299.40 × 2,102.76
  4. Step 4: Simplify right side
    2,215.08x = 6,937,846.34
  5. Step 5: Solve for x
    x = 6,937,846.34/2,215.08
  6. Step 6: Final answer
    x = 3,132.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.