Home / 6,783.40-10,161.69-5,315.68

Finding the Fourth Proportional to 6,783.40, 10,161.69 and 5,315.68

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Solution

The fourth proportional to 6,783.40, 10,161.69 and 5,315.68 is: 7,963.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,783.40 : 10,161.69 = 5,315.68 : x
  2. Step 2: Convert to fraction form
    6,783.40/10,161.69 = 5,315.68/x
  3. Step 3: Cross multiply
    6,783.40x = 10,161.69 × 5,315.68
  4. Step 4: Simplify right side
    6,783.40x = 54,016,292.30
  5. Step 5: Solve for x
    x = 54,016,292.30/6,783.40
  6. Step 6: Final answer
    x = 7,963.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.