Home / 2,021.17-2,787.71-1,784.70

Finding the Fourth Proportional to 2,021.17, 2,787.71 and 1,784.70

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Solution

The fourth proportional to 2,021.17, 2,787.71 and 1,784.70 is: 2,461.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,021.17 : 2,787.71 = 1,784.70 : x
  2. Step 2: Convert to fraction form
    2,021.17/2,787.71 = 1,784.70/x
  3. Step 3: Cross multiply
    2,021.17x = 2,787.71 × 1,784.70
  4. Step 4: Simplify right side
    2,021.17x = 4,975,206.66
  5. Step 5: Solve for x
    x = 4,975,206.66/2,021.17
  6. Step 6: Final answer
    x = 2,461.55

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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.