Home / 5,317.21-7,975.59-1,421.50

Finding the Fourth Proportional to 5,317.21, 7,975.59 and 1,421.50

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Solution

The fourth proportional to 5,317.21, 7,975.59 and 1,421.50 is: 2,132.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,317.21 : 7,975.59 = 1,421.50 : x
  2. Step 2: Convert to fraction form
    5,317.21/7,975.59 = 1,421.50/x
  3. Step 3: Cross multiply
    5,317.21x = 7,975.59 × 1,421.50
  4. Step 4: Simplify right side
    5,317.21x = 11,337,301.19
  5. Step 5: Solve for x
    x = 11,337,301.19/5,317.21
  6. Step 6: Final answer
    x = 2,132.19

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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.