Home / 1,781.40-2,458.32-1,035.50

Finding the Fourth Proportional to 1,781.40, 2,458.32 and 1,035.50

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Solution

The fourth proportional to 1,781.40, 2,458.32 and 1,035.50 is: 1,428.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,781.40 : 2,458.32 = 1,035.50 : x
  2. Step 2: Convert to fraction form
    1,781.40/2,458.32 = 1,035.50/x
  3. Step 3: Cross multiply
    1,781.40x = 2,458.32 × 1,035.50
  4. Step 4: Simplify right side
    1,781.40x = 2,545,590.36
  5. Step 5: Solve for x
    x = 2,545,590.36/1,781.40
  6. Step 6: Final answer
    x = 1,428.98

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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.