Home / 1,642.30-2,266.57-934.26

Finding the Fourth Proportional to 1,642.30, 2,266.57 and 934.26

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Solution

The fourth proportional to 1,642.30, 2,266.57 and 934.26 is: 1,289.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,642.30 : 2,266.57 = 934.26 : x
  2. Step 2: Convert to fraction form
    1,642.30/2,266.57 = 934.26/x
  3. Step 3: Cross multiply
    1,642.30x = 2,266.57 × 934.26
  4. Step 4: Simplify right side
    1,642.30x = 2,117,563.42
  5. Step 5: Solve for x
    x = 2,117,563.42/1,642.30
  6. Step 6: Final answer
    x = 1,289.39

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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.