Home / 2,510.40-3,464.60-1,391.70

Finding the Fourth Proportional to 2,510.40, 3,464.60 and 1,391.70

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Solution

The fourth proportional to 2,510.40, 3,464.60 and 1,391.70 is: 1,920.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,510.40 : 3,464.60 = 1,391.70 : x
  2. Step 2: Convert to fraction form
    2,510.40/3,464.60 = 1,391.70/x
  3. Step 3: Cross multiply
    2,510.40x = 3,464.60 × 1,391.70
  4. Step 4: Simplify right side
    2,510.40x = 4,821,676.86
  5. Step 5: Solve for x
    x = 4,821,676.86/2,510.40
  6. Step 6: Final answer
    x = 1,920.68

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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.