Home / 7,043.49-9,719.64-3,899.43

Finding the Fourth Proportional to 7,043.49, 9,719.64 and 3,899.43

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Solution

The fourth proportional to 7,043.49, 9,719.64 and 3,899.43 is: 5,381.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,043.49 : 9,719.64 = 3,899.43 : x
  2. Step 2: Convert to fraction form
    7,043.49/9,719.64 = 3,899.43/x
  3. Step 3: Cross multiply
    7,043.49x = 9,719.64 × 3,899.43
  4. Step 4: Simplify right side
    7,043.49x = 37,901,055.81
  5. Step 5: Solve for x
    x = 37,901,055.81/7,043.49
  6. Step 6: Final answer
    x = 5,381.01

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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.