Home / 8,420.70-12,631.55-2,577.36

Finding the Fourth Proportional to 8,420.70, 12,631.55 and 2,577.36

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Solution

The fourth proportional to 8,420.70, 12,631.55 and 2,577.36 is: 3,866.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,420.70 : 12,631.55 = 2,577.36 : x
  2. Step 2: Convert to fraction form
    8,420.70/12,631.55 = 2,577.36/x
  3. Step 3: Cross multiply
    8,420.70x = 12,631.55 × 2,577.36
  4. Step 4: Simplify right side
    8,420.70x = 32,556,051.71
  5. Step 5: Solve for x
    x = 32,556,051.71/8,420.70
  6. Step 6: Final answer
    x = 3,866.19

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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.