Home / 2,121.38-2,926.70-1,563.18

Finding the Fourth Proportional to 2,121.38, 2,926.70 and 1,563.18

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Solution

The fourth proportional to 2,121.38, 2,926.70 and 1,563.18 is: 2,156.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,121.38 : 2,926.70 = 1,563.18 : x
  2. Step 2: Convert to fraction form
    2,121.38/2,926.70 = 1,563.18/x
  3. Step 3: Cross multiply
    2,121.38x = 2,926.70 × 1,563.18
  4. Step 4: Simplify right side
    2,121.38x = 4,574,969.03
  5. Step 5: Solve for x
    x = 4,574,969.03/2,121.38
  6. Step 6: Final answer
    x = 2,156.60

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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.