Home / 1,378.58-2,077.35-1,140.44

Finding the Fourth Proportional to 1,378.58, 2,077.35 and 1,140.44

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Solution

The fourth proportional to 1,378.58, 2,077.35 and 1,140.44 is: 1,718.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378.58 : 2,077.35 = 1,140.44 : x
  2. Step 2: Convert to fraction form
    1,378.58/2,077.35 = 1,140.44/x
  3. Step 3: Cross multiply
    1,378.58x = 2,077.35 × 1,140.44
  4. Step 4: Simplify right side
    1,378.58x = 2,369,093.03
  5. Step 5: Solve for x
    x = 2,369,093.03/1,378.58
  6. Step 6: Final answer
    x = 1,718.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.