Home / 1,325.80-1,829.60-801.68

Finding the Fourth Proportional to 1,325.80, 1,829.60 and 801.68

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Solution

The fourth proportional to 1,325.80, 1,829.60 and 801.68 is: 1,106.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,325.80 : 1,829.60 = 801.68 : x
  2. Step 2: Convert to fraction form
    1,325.80/1,829.60 = 801.68/x
  3. Step 3: Cross multiply
    1,325.80x = 1,829.60 × 801.68
  4. Step 4: Simplify right side
    1,325.80x = 1,466,753.73
  5. Step 5: Solve for x
    x = 1,466,753.73/1,325.80
  6. Step 6: Final answer
    x = 1,106.32

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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.