Home / 9,839.81-13,579.75-5,648.87

Finding the Fourth Proportional to 9,839.81, 13,579.75 and 5,648.87

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Solution

The fourth proportional to 9,839.81, 13,579.75 and 5,648.87 is: 7,795.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,839.81 : 13,579.75 = 5,648.87 : x
  2. Step 2: Convert to fraction form
    9,839.81/13,579.75 = 5,648.87/x
  3. Step 3: Cross multiply
    9,839.81x = 13,579.75 × 5,648.87
  4. Step 4: Simplify right side
    9,839.81x = 76,710,283.39
  5. Step 5: Solve for x
    x = 76,710,283.39/9,839.81
  6. Step 6: Final answer
    x = 7,795.91

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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.