Home / 1,631.78-2,445.77-810.57

Finding the Fourth Proportional to 1,631.78, 2,445.77 and 810.57

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Solution

The fourth proportional to 1,631.78, 2,445.77 and 810.57 is: 1,214.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,631.78 : 2,445.77 = 810.57 : x
  2. Step 2: Convert to fraction form
    1,631.78/2,445.77 = 810.57/x
  3. Step 3: Cross multiply
    1,631.78x = 2,445.77 × 810.57
  4. Step 4: Simplify right side
    1,631.78x = 1,982,463.74
  5. Step 5: Solve for x
    x = 1,982,463.74/1,631.78
  6. Step 6: Final answer
    x = 1,214.91

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1.5x scale

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.