Home / 7,977.90-11,969.40-2,432.32

Finding the Fourth Proportional to 7,977.90, 11,969.40 and 2,432.32

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Solution

The fourth proportional to 7,977.90, 11,969.40 and 2,432.32 is: 3,649.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,977.90 : 11,969.40 = 2,432.32 : x
  2. Step 2: Convert to fraction form
    7,977.90/11,969.40 = 2,432.32/x
  3. Step 3: Cross multiply
    7,977.90x = 11,969.40 × 2,432.32
  4. Step 4: Simplify right side
    7,977.90x = 29,113,411.01
  5. Step 5: Solve for x
    x = 29,113,411.01/7,977.90
  6. Step 6: Final answer
    x = 3,649.26

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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.