Home / 7,874.04-11,783.70-5,561.40

Finding the Fourth Proportional to 7,874.04, 11,783.70 and 5,561.40

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Solution

The fourth proportional to 7,874.04, 11,783.70 and 5,561.40 is: 8,322.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,874.04 : 11,783.70 = 5,561.40 : x
  2. Step 2: Convert to fraction form
    7,874.04/11,783.70 = 5,561.40/x
  3. Step 3: Cross multiply
    7,874.04x = 11,783.70 × 5,561.40
  4. Step 4: Simplify right side
    7,874.04x = 65,533,869.18
  5. Step 5: Solve for x
    x = 65,533,869.18/7,874.04
  6. Step 6: Final answer
    x = 8,322.78

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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.