Home / 2,280.69-3,420.83-637.20

Finding the Fourth Proportional to 2,280.69, 3,420.83 and 637.20

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Solution

The fourth proportional to 2,280.69, 3,420.83 and 637.20 is: 955.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,280.69 : 3,420.83 = 637.20 : x
  2. Step 2: Convert to fraction form
    2,280.69/3,420.83 = 637.20/x
  3. Step 3: Cross multiply
    2,280.69x = 3,420.83 × 637.20
  4. Step 4: Simplify right side
    2,280.69x = 2,179,754.47
  5. Step 5: Solve for x
    x = 2,179,754.47/2,280.69
  6. Step 6: Final answer
    x = 955.74

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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.