Home / 9,133.28-12,603.96-5,155.44

Finding the Fourth Proportional to 9,133.28, 12,603.96 and 5,155.44

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Solution

The fourth proportional to 9,133.28, 12,603.96 and 5,155.44 is: 7,114.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,133.28 : 12,603.96 = 5,155.44 : x
  2. Step 2: Convert to fraction form
    9,133.28/12,603.96 = 5,155.44/x
  3. Step 3: Cross multiply
    9,133.28x = 12,603.96 × 5,155.44
  4. Step 4: Simplify right side
    9,133.28x = 64,978,959.54
  5. Step 5: Solve for x
    x = 64,978,959.54/9,133.28
  6. Step 6: Final answer
    x = 7,114.53

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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.