Home / 6,279.27-8,643.63-5,428.13

Finding the Fourth Proportional to 6,279.27, 8,643.63 and 5,428.13

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Solution

The fourth proportional to 6,279.27, 8,643.63 and 5,428.13 is: 7,472.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,279.27 : 8,643.63 = 5,428.13 : x
  2. Step 2: Convert to fraction form
    6,279.27/8,643.63 = 5,428.13/x
  3. Step 3: Cross multiply
    6,279.27x = 8,643.63 × 5,428.13
  4. Step 4: Simplify right side
    6,279.27x = 46,918,747.31
  5. Step 5: Solve for x
    x = 46,918,747.31/6,279.27
  6. Step 6: Final answer
    x = 7,472.01

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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.