Home / 9,135.36-12,607.38-5,155.02

Finding the Fourth Proportional to 9,135.36, 12,607.38 and 5,155.02

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Solution

The fourth proportional to 9,135.36, 12,607.38 and 5,155.02 is: 7,114.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,135.36 : 12,607.38 = 5,155.02 : x
  2. Step 2: Convert to fraction form
    9,135.36/12,607.38 = 5,155.02/x
  3. Step 3: Cross multiply
    9,135.36x = 12,607.38 × 5,155.02
  4. Step 4: Simplify right side
    9,135.36x = 64,991,296.05
  5. Step 5: Solve for x
    x = 64,991,296.05/9,135.36
  6. Step 6: Final answer
    x = 7,114.26

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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.