Home / 2,312.76-3,447.60-2,215.56

Finding the Fourth Proportional to 2,312.76, 3,447.60 and 2,215.56

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Solution

The fourth proportional to 2,312.76, 3,447.60 and 2,215.56 is: 3,302.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,312.76 : 3,447.60 = 2,215.56 : x
  2. Step 2: Convert to fraction form
    2,312.76/3,447.60 = 2,215.56/x
  3. Step 3: Cross multiply
    2,312.76x = 3,447.60 × 2,215.56
  4. Step 4: Simplify right side
    2,312.76x = 7,638,364.66
  5. Step 5: Solve for x
    x = 7,638,364.66/2,312.76
  6. Step 6: Final answer
    x = 3,302.71

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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.