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Finding the Fourth Proportional to 1,699.43, 2,345.22 and 953.42

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Solution

The fourth proportional to 1,699.43, 2,345.22 and 953.42 is: 1,315.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,699.43 : 2,345.22 = 953.42 : x
  2. Step 2: Convert to fraction form
    1,699.43/2,345.22 = 953.42/x
  3. Step 3: Cross multiply
    1,699.43x = 2,345.22 × 953.42
  4. Step 4: Simplify right side
    1,699.43x = 2,235,979.65
  5. Step 5: Solve for x
    x = 2,235,979.65/1,699.43
  6. Step 6: Final answer
    x = 1,315.72

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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.