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Finding the Fourth Proportional to 1,642.51, 2,266.27 and 934.39

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Solution

The fourth proportional to 1,642.51, 2,266.27 and 934.39 is: 1,289.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,642.51 : 2,266.27 = 934.39 : x
  2. Step 2: Convert to fraction form
    1,642.51/2,266.27 = 934.39/x
  3. Step 3: Cross multiply
    1,642.51x = 2,266.27 × 934.39
  4. Step 4: Simplify right side
    1,642.51x = 2,117,580.03
  5. Step 5: Solve for x
    x = 2,117,580.03/1,642.51
  6. Step 6: Final answer
    x = 1,289.23

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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.