Home / 2,910.76-4,020.78-2,325.40

Finding the Fourth Proportional to 2,910.76, 4,020.78 and 2,325.40

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Solution

The fourth proportional to 2,910.76, 4,020.78 and 2,325.40 is: 3,212.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,910.76 : 4,020.78 = 2,325.40 : x
  2. Step 2: Convert to fraction form
    2,910.76/4,020.78 = 2,325.40/x
  3. Step 3: Cross multiply
    2,910.76x = 4,020.78 × 2,325.40
  4. Step 4: Simplify right side
    2,910.76x = 9,349,921.81
  5. Step 5: Solve for x
    x = 9,349,921.81/2,910.76
  6. Step 6: Final answer
    x = 3,212.19

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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.