Home / 6,869.12-10,303.68-1,939.20

Finding the Fourth Proportional to 6,869.12, 10,303.68 and 1,939.20

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Solution

The fourth proportional to 6,869.12, 10,303.68 and 1,939.20 is: 2,908.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,869.12 : 10,303.68 = 1,939.20 : x
  2. Step 2: Convert to fraction form
    6,869.12/10,303.68 = 1,939.20/x
  3. Step 3: Cross multiply
    6,869.12x = 10,303.68 × 1,939.20
  4. Step 4: Simplify right side
    6,869.12x = 19,980,896.26
  5. Step 5: Solve for x
    x = 19,980,896.26/6,869.12
  6. Step 6: Final answer
    x = 2,908.80

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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.