Home / 9,887.79-13,643.81-5,908.05

Finding the Fourth Proportional to 9,887.79, 13,643.81 and 5,908.05

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Solution

The fourth proportional to 9,887.79, 13,643.81 and 5,908.05 is: 8,152.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,887.79 : 13,643.81 = 5,908.05 : x
  2. Step 2: Convert to fraction form
    9,887.79/13,643.81 = 5,908.05/x
  3. Step 3: Cross multiply
    9,887.79x = 13,643.81 × 5,908.05
  4. Step 4: Simplify right side
    9,887.79x = 80,608,282.13
  5. Step 5: Solve for x
    x = 80,608,282.13/9,887.79
  6. Step 6: Final answer
    x = 8,152.31

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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.