Home / 6,421.63-8,860.94-3,588.78

Finding the Fourth Proportional to 6,421.63, 8,860.94 and 3,588.78

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Solution

The fourth proportional to 6,421.63, 8,860.94 and 3,588.78 is: 4,952.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,421.63 : 8,860.94 = 3,588.78 : x
  2. Step 2: Convert to fraction form
    6,421.63/8,860.94 = 3,588.78/x
  3. Step 3: Cross multiply
    6,421.63x = 8,860.94 × 3,588.78
  4. Step 4: Simplify right side
    6,421.63x = 31,799,964.25
  5. Step 5: Solve for x
    x = 31,799,964.25/6,421.63
  6. Step 6: Final answer
    x = 4,952.01

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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.