Home / 6,428.10-8,870.41-3,556.66

Finding the Fourth Proportional to 6,428.10, 8,870.41 and 3,556.66

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Solution

The fourth proportional to 6,428.10, 8,870.41 and 3,556.66 is: 4,907.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,428.10 : 8,870.41 = 3,556.66 : x
  2. Step 2: Convert to fraction form
    6,428.10/8,870.41 = 3,556.66/x
  3. Step 3: Cross multiply
    6,428.10x = 8,870.41 × 3,556.66
  4. Step 4: Simplify right side
    6,428.10x = 31,549,032.43
  5. Step 5: Solve for x
    x = 31,549,032.43/6,428.10
  6. Step 6: Final answer
    x = 4,907.99

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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.