Home / 3,914.08-5,870.40-1,317.12

Finding the Fourth Proportional to 3,914.08, 5,870.40 and 1,317.12

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Solution

The fourth proportional to 3,914.08, 5,870.40 and 1,317.12 is: 1,975.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,914.08 : 5,870.40 = 1,317.12 : x
  2. Step 2: Convert to fraction form
    3,914.08/5,870.40 = 1,317.12/x
  3. Step 3: Cross multiply
    3,914.08x = 5,870.40 × 1,317.12
  4. Step 4: Simplify right side
    3,914.08x = 7,732,021.25
  5. Step 5: Solve for x
    x = 7,732,021.25/3,914.08
  6. Step 6: Final answer
    x = 1,975.44

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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.