Home / 1,766.40-2,439.04-1,137.28

Finding the Fourth Proportional to 1,766.40, 2,439.04 and 1,137.28

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Solution

The fourth proportional to 1,766.40, 2,439.04 and 1,137.28 is: 1,570.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,766.40 : 2,439.04 = 1,137.28 : x
  2. Step 2: Convert to fraction form
    1,766.40/2,439.04 = 1,137.28/x
  3. Step 3: Cross multiply
    1,766.40x = 2,439.04 × 1,137.28
  4. Step 4: Simplify right side
    1,766.40x = 2,773,871.41
  5. Step 5: Solve for x
    x = 2,773,871.41/1,766.40
  6. Step 6: Final answer
    x = 1,570.35

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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.