Home / 4,979.40-7,464.42-1,690.19

Finding the Fourth Proportional to 4,979.40, 7,464.42 and 1,690.19

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Solution

The fourth proportional to 4,979.40, 7,464.42 and 1,690.19 is: 2,533.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,979.40 : 7,464.42 = 1,690.19 : x
  2. Step 2: Convert to fraction form
    4,979.40/7,464.42 = 1,690.19/x
  3. Step 3: Cross multiply
    4,979.40x = 7,464.42 × 1,690.19
  4. Step 4: Simplify right side
    4,979.40x = 12,616,279.59
  5. Step 5: Solve for x
    x = 12,616,279.59/4,979.40
  6. Step 6: Final answer
    x = 2,533.70

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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.