Home / 2,430.78-3,353.07-1,645.02

Finding the Fourth Proportional to 2,430.78, 3,353.07 and 1,645.02

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Solution

The fourth proportional to 2,430.78, 3,353.07 and 1,645.02 is: 2,269.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,430.78 : 3,353.07 = 1,645.02 : x
  2. Step 2: Convert to fraction form
    2,430.78/3,353.07 = 1,645.02/x
  3. Step 3: Cross multiply
    2,430.78x = 3,353.07 × 1,645.02
  4. Step 4: Simplify right side
    2,430.78x = 5,515,867.21
  5. Step 5: Solve for x
    x = 5,515,867.21/2,430.78
  6. Step 6: Final answer
    x = 2,269.18

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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.