Home / 3,718.96-5,580.68-1,378.58

Finding the Fourth Proportional to 3,718.96, 5,580.68 and 1,378.58

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Solution

The fourth proportional to 3,718.96, 5,580.68 and 1,378.58 is: 2,068.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,718.96 : 5,580.68 = 1,378.58 : x
  2. Step 2: Convert to fraction form
    3,718.96/5,580.68 = 1,378.58/x
  3. Step 3: Cross multiply
    3,718.96x = 5,580.68 × 1,378.58
  4. Step 4: Simplify right side
    3,718.96x = 7,693,379.04
  5. Step 5: Solve for x
    x = 7,693,379.04/3,718.96
  6. Step 6: Final answer
    x = 2,068.69

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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.