Home / 1,797.40-2,480.70-1,680.28

Finding the Fourth Proportional to 1,797.40, 2,480.70 and 1,680.28

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Solution

The fourth proportional to 1,797.40, 2,480.70 and 1,680.28 is: 2,319.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,797.40 : 2,480.70 = 1,680.28 : x
  2. Step 2: Convert to fraction form
    1,797.40/2,480.70 = 1,680.28/x
  3. Step 3: Cross multiply
    1,797.40x = 2,480.70 × 1,680.28
  4. Step 4: Simplify right side
    1,797.40x = 4,168,270.60
  5. Step 5: Solve for x
    x = 4,168,270.60/1,797.40
  6. Step 6: Final answer
    x = 2,319.06

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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.