Home / 7,031.64-9,703.68-3,887.84

Finding the Fourth Proportional to 7,031.64, 9,703.68 and 3,887.84

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Solution

The fourth proportional to 7,031.64, 9,703.68 and 3,887.84 is: 5,365.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,031.64 : 9,703.68 = 3,887.84 : x
  2. Step 2: Convert to fraction form
    7,031.64/9,703.68 = 3,887.84/x
  3. Step 3: Cross multiply
    7,031.64x = 9,703.68 × 3,887.84
  4. Step 4: Simplify right side
    7,031.64x = 37,726,355.25
  5. Step 5: Solve for x
    x = 37,726,355.25/7,031.64
  6. Step 6: Final answer
    x = 5,365.23

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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.