Home / 5,420.04-8,127.48-2,788.86

Finding the Fourth Proportional to 5,420.04, 8,127.48 and 2,788.86

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Solution

The fourth proportional to 5,420.04, 8,127.48 and 2,788.86 is: 4,181.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,420.04 : 8,127.48 = 2,788.86 : x
  2. Step 2: Convert to fraction form
    5,420.04/8,127.48 = 2,788.86/x
  3. Step 3: Cross multiply
    5,420.04x = 8,127.48 × 2,788.86
  4. Step 4: Simplify right side
    5,420.04x = 22,666,403.87
  5. Step 5: Solve for x
    x = 22,666,403.87/5,420.04
  6. Step 6: Final answer
    x = 4,181.96

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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.