Home / 3,531.79-4,873.70-1,938.40

Finding the Fourth Proportional to 3,531.79, 4,873.70 and 1,938.40

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Solution

The fourth proportional to 3,531.79, 4,873.70 and 1,938.40 is: 2,674.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,531.79 : 4,873.70 = 1,938.40 : x
  2. Step 2: Convert to fraction form
    3,531.79/4,873.70 = 1,938.40/x
  3. Step 3: Cross multiply
    3,531.79x = 4,873.70 × 1,938.40
  4. Step 4: Simplify right side
    3,531.79x = 9,447,180.08
  5. Step 5: Solve for x
    x = 9,447,180.08/3,531.79
  6. Step 6: Final answer
    x = 2,674.90

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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.