Home / 2,122.95-2,929.86-1,178.93

Finding the Fourth Proportional to 2,122.95, 2,929.86 and 1,178.93

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Solution

The fourth proportional to 2,122.95, 2,929.86 and 1,178.93 is: 1,627.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,122.95 : 2,929.86 = 1,178.93 : x
  2. Step 2: Convert to fraction form
    2,122.95/2,929.86 = 1,178.93/x
  3. Step 3: Cross multiply
    2,122.95x = 2,929.86 × 1,178.93
  4. Step 4: Simplify right side
    2,122.95x = 3,454,080.78
  5. Step 5: Solve for x
    x = 3,454,080.78/2,122.95
  6. Step 6: Final answer
    x = 1,627.02

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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.