Home / 6,434.36-8,880.80-3,917.30

Finding the Fourth Proportional to 6,434.36, 8,880.80 and 3,917.30

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Solution

The fourth proportional to 6,434.36, 8,880.80 and 3,917.30 is: 5,406.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,434.36 : 8,880.80 = 3,917.30 : x
  2. Step 2: Convert to fraction form
    6,434.36/8,880.80 = 3,917.30/x
  3. Step 3: Cross multiply
    6,434.36x = 8,880.80 × 3,917.30
  4. Step 4: Simplify right side
    6,434.36x = 34,788,765.84
  5. Step 5: Solve for x
    x = 34,788,765.84/6,434.36
  6. Step 6: Final answer
    x = 5,406.72

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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.