Home / 2,922.40-4,392.60-1,954.72

Finding the Fourth Proportional to 2,922.40, 4,392.60 and 1,954.72

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Solution

The fourth proportional to 2,922.40, 4,392.60 and 1,954.72 is: 2,938.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,922.40 : 4,392.60 = 1,954.72 : x
  2. Step 2: Convert to fraction form
    2,922.40/4,392.60 = 1,954.72/x
  3. Step 3: Cross multiply
    2,922.40x = 4,392.60 × 1,954.72
  4. Step 4: Simplify right side
    2,922.40x = 8,586,303.07
  5. Step 5: Solve for x
    x = 8,586,303.07/2,922.40
  6. Step 6: Final answer
    x = 2,938.10

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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.