Home / 2,116.80-2,920.56-1,232.40

Finding the Fourth Proportional to 2,116.80, 2,920.56 and 1,232.40

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Solution

The fourth proportional to 2,116.80, 2,920.56 and 1,232.40 is: 1,700.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,116.80 : 2,920.56 = 1,232.40 : x
  2. Step 2: Convert to fraction form
    2,116.80/2,920.56 = 1,232.40/x
  3. Step 3: Cross multiply
    2,116.80x = 2,920.56 × 1,232.40
  4. Step 4: Simplify right side
    2,116.80x = 3,599,298.14
  5. Step 5: Solve for x
    x = 3,599,298.14/2,116.80
  6. Step 6: Final answer
    x = 1,700.35

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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.