Home / 8,420.85-12,631.41-2,577.51

Finding the Fourth Proportional to 8,420.85, 12,631.41 and 2,577.51

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Solution

The fourth proportional to 8,420.85, 12,631.41 and 2,577.51 is: 3,866.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,420.85 : 12,631.41 = 2,577.51 : x
  2. Step 2: Convert to fraction form
    8,420.85/12,631.41 = 2,577.51/x
  3. Step 3: Cross multiply
    8,420.85x = 12,631.41 × 2,577.51
  4. Step 4: Simplify right side
    8,420.85x = 32,557,585.59
  5. Step 5: Solve for x
    x = 32,557,585.59/8,420.85
  6. Step 6: Final answer
    x = 3,866.31

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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.