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Finding the Fourth Proportional to 5,316.96, 7,975.44 and 1,854.21

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Solution

The fourth proportional to 5,316.96, 7,975.44 and 1,854.21 is: 2,781.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,316.96 : 7,975.44 = 1,854.21 : x
  2. Step 2: Convert to fraction form
    5,316.96/7,975.44 = 1,854.21/x
  3. Step 3: Cross multiply
    5,316.96x = 7,975.44 × 1,854.21
  4. Step 4: Simplify right side
    5,316.96x = 14,788,140.60
  5. Step 5: Solve for x
    x = 14,788,140.60/5,316.96
  6. Step 6: Final answer
    x = 2,781.32

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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.