Home / 4,275.40-6,408.96-1,640.89

Finding the Fourth Proportional to 4,275.40, 6,408.96 and 1,640.89

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Solution

The fourth proportional to 4,275.40, 6,408.96 and 1,640.89 is: 2,459.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,275.40 : 6,408.96 = 1,640.89 : x
  2. Step 2: Convert to fraction form
    4,275.40/6,408.96 = 1,640.89/x
  3. Step 3: Cross multiply
    4,275.40x = 6,408.96 × 1,640.89
  4. Step 4: Simplify right side
    4,275.40x = 10,516,398.37
  5. Step 5: Solve for x
    x = 10,516,398.37/4,275.40
  6. Step 6: Final answer
    x = 2,459.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.