Home / 7,790.40-11,674.08-4,088.64

Finding the Fourth Proportional to 7,790.40, 11,674.08 and 4,088.64

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Solution

The fourth proportional to 7,790.40, 11,674.08 and 4,088.64 is: 6,126.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,790.40 : 11,674.08 = 4,088.64 : x
  2. Step 2: Convert to fraction form
    7,790.40/11,674.08 = 4,088.64/x
  3. Step 3: Cross multiply
    7,790.40x = 11,674.08 × 4,088.64
  4. Step 4: Simplify right side
    7,790.40x = 47,731,110.45
  5. Step 5: Solve for x
    x = 47,731,110.45/7,790.40
  6. Step 6: Final answer
    x = 6,126.91

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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.