Home / 6,405.90-8,841.54-4,051.20

Finding the Fourth Proportional to 6,405.90, 8,841.54 and 4,051.20

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Solution

The fourth proportional to 6,405.90, 8,841.54 and 4,051.20 is: 5,591.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,405.90 : 8,841.54 = 4,051.20 : x
  2. Step 2: Convert to fraction form
    6,405.90/8,841.54 = 4,051.20/x
  3. Step 3: Cross multiply
    6,405.90x = 8,841.54 × 4,051.20
  4. Step 4: Simplify right side
    6,405.90x = 35,818,846.85
  5. Step 5: Solve for x
    x = 35,818,846.85/6,405.90
  6. Step 6: Final answer
    x = 5,591.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.