Home / 9,114.75-12,579.28-5,577.28

Finding the Fourth Proportional to 9,114.75, 12,579.28 and 5,577.28

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Solution

The fourth proportional to 9,114.75, 12,579.28 and 5,577.28 is: 7,697.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,114.75 : 12,579.28 = 5,577.28 : x
  2. Step 2: Convert to fraction form
    9,114.75/12,579.28 = 5,577.28/x
  3. Step 3: Cross multiply
    9,114.75x = 12,579.28 × 5,577.28
  4. Step 4: Simplify right side
    9,114.75x = 70,158,121.37
  5. Step 5: Solve for x
    x = 70,158,121.37/9,114.75
  6. Step 6: Final answer
    x = 7,697.21

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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.