Home / 1,689.02-2,330.84-942.94

Finding the Fourth Proportional to 1,689.02, 2,330.84 and 942.94

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Solution

The fourth proportional to 1,689.02, 2,330.84 and 942.94 is: 1,301.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,689.02 : 2,330.84 = 942.94 : x
  2. Step 2: Convert to fraction form
    1,689.02/2,330.84 = 942.94/x
  3. Step 3: Cross multiply
    1,689.02x = 2,330.84 × 942.94
  4. Step 4: Simplify right side
    1,689.02x = 2,197,842.27
  5. Step 5: Solve for x
    x = 2,197,842.27/1,689.02
  6. Step 6: Final answer
    x = 1,301.25

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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.