Home / 4,853.14-7,279.68-1,390.40

Finding the Fourth Proportional to 4,853.14, 7,279.68 and 1,390.40

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Solution

The fourth proportional to 4,853.14, 7,279.68 and 1,390.40 is: 2,085.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,853.14 : 7,279.68 = 1,390.40 : x
  2. Step 2: Convert to fraction form
    4,853.14/7,279.68 = 1,390.40/x
  3. Step 3: Cross multiply
    4,853.14x = 7,279.68 × 1,390.40
  4. Step 4: Simplify right side
    4,853.14x = 10,121,667.07
  5. Step 5: Solve for x
    x = 10,121,667.07/4,853.14
  6. Step 6: Final answer
    x = 2,085.59

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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.