Home / 3,715.80-5,128.26-2,440.74

Finding the Fourth Proportional to 3,715.80, 5,128.26 and 2,440.74

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Solution

The fourth proportional to 3,715.80, 5,128.26 and 2,440.74 is: 3,368.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,715.80 : 5,128.26 = 2,440.74 : x
  2. Step 2: Convert to fraction form
    3,715.80/5,128.26 = 2,440.74/x
  3. Step 3: Cross multiply
    3,715.80x = 5,128.26 × 2,440.74
  4. Step 4: Simplify right side
    3,715.80x = 12,516,749.31
  5. Step 5: Solve for x
    x = 12,516,749.31/3,715.80
  6. Step 6: Final answer
    x = 3,368.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.