Home / 6,762.31-10,128.35-3,909.30

Finding the Fourth Proportional to 6,762.31, 10,128.35 and 3,909.30

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Solution

The fourth proportional to 6,762.31, 10,128.35 and 3,909.30 is: 5,855.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,762.31 : 10,128.35 = 3,909.30 : x
  2. Step 2: Convert to fraction form
    6,762.31/10,128.35 = 3,909.30/x
  3. Step 3: Cross multiply
    6,762.31x = 10,128.35 × 3,909.30
  4. Step 4: Simplify right side
    6,762.31x = 39,594,739.11
  5. Step 5: Solve for x
    x = 39,594,739.11/6,762.31
  6. Step 6: Final answer
    x = 5,855.21

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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.