Home / 1,938.40-2,675-1,152.46

Finding the Fourth Proportional to 1,938.40, 2,675 and 1,152.46

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Solution

The fourth proportional to 1,938.40, 2,675 and 1,152.46 is: 1,590.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,938.40 : 2,675 = 1,152.46 : x
  2. Step 2: Convert to fraction form
    1,938.40/2,675 = 1,152.46/x
  3. Step 3: Cross multiply
    1,938.40x = 2,675 × 1,152.46
  4. Step 4: Simplify right side
    1,938.40x = 3,082,830.50
  5. Step 5: Solve for x
    x = 3,082,830.50/1,938.40
  6. Step 6: Final answer
    x = 1,590.40

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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.