Home / 1,787.49-2,674.55-1,240.74

Finding the Fourth Proportional to 1,787.49, 2,674.55 and 1,240.74

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Solution

The fourth proportional to 1,787.49, 2,674.55 and 1,240.74 is: 1,856.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,787.49 : 2,674.55 = 1,240.74 : x
  2. Step 2: Convert to fraction form
    1,787.49/2,674.55 = 1,240.74/x
  3. Step 3: Cross multiply
    1,787.49x = 2,674.55 × 1,240.74
  4. Step 4: Simplify right side
    1,787.49x = 3,318,424.27
  5. Step 5: Solve for x
    x = 3,318,424.27/1,787.49
  6. Step 6: Final answer
    x = 1,856.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.