Home / 2,223.12-3,068.28-1,292.16

Finding the Fourth Proportional to 2,223.12, 3,068.28 and 1,292.16

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Solution

The fourth proportional to 2,223.12, 3,068.28 and 1,292.16 is: 1,783.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,223.12 : 3,068.28 = 1,292.16 : x
  2. Step 2: Convert to fraction form
    2,223.12/3,068.28 = 1,292.16/x
  3. Step 3: Cross multiply
    2,223.12x = 3,068.28 × 1,292.16
  4. Step 4: Simplify right side
    2,223.12x = 3,964,708.68
  5. Step 5: Solve for x
    x = 3,964,708.68/2,223.12
  6. Step 6: Final answer
    x = 1,783.40

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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.