Home / 3,280.78-4,528.43-1,955.40

Finding the Fourth Proportional to 3,280.78, 4,528.43 and 1,955.40

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Solution

The fourth proportional to 3,280.78, 4,528.43 and 1,955.40 is: 2,699.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,280.78 : 4,528.43 = 1,955.40 : x
  2. Step 2: Convert to fraction form
    3,280.78/4,528.43 = 1,955.40/x
  3. Step 3: Cross multiply
    3,280.78x = 4,528.43 × 1,955.40
  4. Step 4: Simplify right side
    3,280.78x = 8,854,892.02
  5. Step 5: Solve for x
    x = 8,854,892.02/3,280.78
  6. Step 6: Final answer
    x = 2,699.02

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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.