Home / 7,821.14-10,789.14-5,302.40

Finding the Fourth Proportional to 7,821.14, 10,789.14 and 5,302.40

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Solution

The fourth proportional to 7,821.14, 10,789.14 and 5,302.40 is: 7,314.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,821.14 : 10,789.14 = 5,302.40 : x
  2. Step 2: Convert to fraction form
    7,821.14/10,789.14 = 5,302.40/x
  3. Step 3: Cross multiply
    7,821.14x = 10,789.14 × 5,302.40
  4. Step 4: Simplify right side
    7,821.14x = 57,208,335.94
  5. Step 5: Solve for x
    x = 57,208,335.94/7,821.14
  6. Step 6: Final answer
    x = 7,314.58

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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.