Home / 7,021.52-9,685.36-4,187.08

Finding the Fourth Proportional to 7,021.52, 9,685.36 and 4,187.08

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Solution

The fourth proportional to 7,021.52, 9,685.36 and 4,187.08 is: 5,775.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,021.52 : 9,685.36 = 4,187.08 : x
  2. Step 2: Convert to fraction form
    7,021.52/9,685.36 = 4,187.08/x
  3. Step 3: Cross multiply
    7,021.52x = 9,685.36 × 4,187.08
  4. Step 4: Simplify right side
    7,021.52x = 40,553,377.15
  5. Step 5: Solve for x
    x = 40,553,377.15/7,021.52
  6. Step 6: Final answer
    x = 5,775.58

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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.