Home / 3,715.16-5,126.40-2,390.65

Finding the Fourth Proportional to 3,715.16, 5,126.40 and 2,390.65

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Solution

The fourth proportional to 3,715.16, 5,126.40 and 2,390.65 is: 3,298.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,715.16 : 5,126.40 = 2,390.65 : x
  2. Step 2: Convert to fraction form
    3,715.16/5,126.40 = 2,390.65/x
  3. Step 3: Cross multiply
    3,715.16x = 5,126.40 × 2,390.65
  4. Step 4: Simplify right side
    3,715.16x = 12,255,415.34
  5. Step 5: Solve for x
    x = 12,255,415.34/3,715.16
  6. Step 6: Final answer
    x = 3,298.76

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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.