Home / 6,386.80-9,580.20-3,106.30

Finding the Fourth Proportional to 6,386.80, 9,580.20 and 3,106.30

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Solution

The fourth proportional to 6,386.80, 9,580.20 and 3,106.30 is: 4,659.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,386.80 : 9,580.20 = 3,106.30 : x
  2. Step 2: Convert to fraction form
    6,386.80/9,580.20 = 3,106.30/x
  3. Step 3: Cross multiply
    6,386.80x = 9,580.20 × 3,106.30
  4. Step 4: Simplify right side
    6,386.80x = 29,758,975.26
  5. Step 5: Solve for x
    x = 29,758,975.26/6,386.80
  6. Step 6: Final answer
    x = 4,659.45

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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.