Home / 5,639.41-7,780.62-3,281.10

Finding the Fourth Proportional to 5,639.41, 7,780.62 and 3,281.10

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Solution

The fourth proportional to 5,639.41, 7,780.62 and 3,281.10 is: 4,526.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,639.41 : 7,780.62 = 3,281.10 : x
  2. Step 2: Convert to fraction form
    5,639.41/7,780.62 = 3,281.10/x
  3. Step 3: Cross multiply
    5,639.41x = 7,780.62 × 3,281.10
  4. Step 4: Simplify right side
    5,639.41x = 25,528,992.28
  5. Step 5: Solve for x
    x = 25,528,992.28/5,639.41
  6. Step 6: Final answer
    x = 4,526.89

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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.