Home / 7,720.54-11,580.71-1,877.13

Finding the Fourth Proportional to 7,720.54, 11,580.71 and 1,877.13

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Solution

The fourth proportional to 7,720.54, 11,580.71 and 1,877.13 is: 2,815.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,720.54 : 11,580.71 = 1,877.13 : x
  2. Step 2: Convert to fraction form
    7,720.54/11,580.71 = 1,877.13/x
  3. Step 3: Cross multiply
    7,720.54x = 11,580.71 × 1,877.13
  4. Step 4: Simplify right side
    7,720.54x = 21,738,488.78
  5. Step 5: Solve for x
    x = 21,738,488.78/7,720.54
  6. Step 6: Final answer
    x = 2,815.67

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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.