Home / 7,820.75-11,731.12-1,977.35

Finding the Fourth Proportional to 7,820.75, 11,731.12 and 1,977.35

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Solution

The fourth proportional to 7,820.75, 11,731.12 and 1,977.35 is: 2,966.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,820.75 : 11,731.12 = 1,977.35 : x
  2. Step 2: Convert to fraction form
    7,820.75/11,731.12 = 1,977.35/x
  3. Step 3: Cross multiply
    7,820.75x = 11,731.12 × 1,977.35
  4. Step 4: Simplify right side
    7,820.75x = 23,196,554.52
  5. Step 5: Solve for x
    x = 23,196,554.52/7,820.75
  6. Step 6: Final answer
    x = 2,966.03

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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.