Home / 7,869.80-11,801.64-2,938.32

Finding the Fourth Proportional to 7,869.80, 11,801.64 and 2,938.32

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Solution

The fourth proportional to 7,869.80, 11,801.64 and 2,938.32 is: 4,406.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,869.80 : 11,801.64 = 2,938.32 : x
  2. Step 2: Convert to fraction form
    7,869.80/11,801.64 = 2,938.32/x
  3. Step 3: Cross multiply
    7,869.80x = 11,801.64 × 2,938.32
  4. Step 4: Simplify right side
    7,869.80x = 34,676,994.84
  5. Step 5: Solve for x
    x = 34,676,994.84/7,869.80
  6. Step 6: Final answer
    x = 4,406.34

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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.