Home / 1,480.55-2,043.08-817.35

Finding the Fourth Proportional to 1,480.55, 2,043.08 and 817.35

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Solution

The fourth proportional to 1,480.55, 2,043.08 and 817.35 is: 1,127.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,480.55 : 2,043.08 = 817.35 : x
  2. Step 2: Convert to fraction form
    1,480.55/2,043.08 = 817.35/x
  3. Step 3: Cross multiply
    1,480.55x = 2,043.08 × 817.35
  4. Step 4: Simplify right side
    1,480.55x = 1,669,907.35
  5. Step 5: Solve for x
    x = 1,669,907.35/1,480.55
  6. Step 6: Final answer
    x = 1,127.90

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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.