Home / 3,209.18-4,430.80-2,148.32

Finding the Fourth Proportional to 3,209.18, 4,430.80 and 2,148.32

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Solution

The fourth proportional to 3,209.18, 4,430.80 and 2,148.32 is: 2,966.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,209.18 : 4,430.80 = 2,148.32 : x
  2. Step 2: Convert to fraction form
    3,209.18/4,430.80 = 2,148.32/x
  3. Step 3: Cross multiply
    3,209.18x = 4,430.80 × 2,148.32
  4. Step 4: Simplify right side
    3,209.18x = 9,518,748.73
  5. Step 5: Solve for x
    x = 9,518,748.73/3,209.18
  6. Step 6: Final answer
    x = 2,966.10

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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.