Home / 2,021.14-2,787.30-1,312.24

Finding the Fourth Proportional to 2,021.14, 2,787.30 and 1,312.24

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Solution

The fourth proportional to 2,021.14, 2,787.30 and 1,312.24 is: 1,809.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,021.14 : 2,787.30 = 1,312.24 : x
  2. Step 2: Convert to fraction form
    2,021.14/2,787.30 = 1,312.24/x
  3. Step 3: Cross multiply
    2,021.14x = 2,787.30 × 1,312.24
  4. Step 4: Simplify right side
    2,021.14x = 3,657,606.55
  5. Step 5: Solve for x
    x = 3,657,606.55/2,021.14
  6. Step 6: Final answer
    x = 1,809.68

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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.