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Finding the Fourth Proportional to 1,695.51, 2,545.11 and 1,424.57

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Solution

The fourth proportional to 1,695.51, 2,545.11 and 1,424.57 is: 2,138.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,695.51 : 2,545.11 = 1,424.57 : x
  2. Step 2: Convert to fraction form
    1,695.51/2,545.11 = 1,424.57/x
  3. Step 3: Cross multiply
    1,695.51x = 2,545.11 × 1,424.57
  4. Step 4: Simplify right side
    1,695.51x = 3,625,674.63
  5. Step 5: Solve for x
    x = 3,625,674.63/1,695.51
  6. Step 6: Final answer
    x = 2,138.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.