Home / 6,774.80-9,347.60-4,087.28

Finding the Fourth Proportional to 6,774.80, 9,347.60 and 4,087.28

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Solution

The fourth proportional to 6,774.80, 9,347.60 and 4,087.28 is: 5,639.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,774.80 : 9,347.60 = 4,087.28 : x
  2. Step 2: Convert to fraction form
    6,774.80/9,347.60 = 4,087.28/x
  3. Step 3: Cross multiply
    6,774.80x = 9,347.60 × 4,087.28
  4. Step 4: Simplify right side
    6,774.80x = 38,206,258.53
  5. Step 5: Solve for x
    x = 38,206,258.53/6,774.80
  6. Step 6: Final answer
    x = 5,639.47

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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.