Home / 6,291.32-8,686.08-3,903.84

Finding the Fourth Proportional to 6,291.32, 8,686.08 and 3,903.84

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Solution

The fourth proportional to 6,291.32, 8,686.08 and 3,903.84 is: 5,389.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,291.32 : 8,686.08 = 3,903.84 : x
  2. Step 2: Convert to fraction form
    6,291.32/8,686.08 = 3,903.84/x
  3. Step 3: Cross multiply
    6,291.32x = 8,686.08 × 3,903.84
  4. Step 4: Simplify right side
    6,291.32x = 33,909,066.55
  5. Step 5: Solve for x
    x = 33,909,066.55/6,291.32
  6. Step 6: Final answer
    x = 5,389.82

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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.