Home / 7,851.30-11,762.55-6,612.90

Finding the Fourth Proportional to 7,851.30, 11,762.55 and 6,612.90

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Solution

The fourth proportional to 7,851.30, 11,762.55 and 6,612.90 is: 9,907.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,851.30 : 11,762.55 = 6,612.90 : x
  2. Step 2: Convert to fraction form
    7,851.30/11,762.55 = 6,612.90/x
  3. Step 3: Cross multiply
    7,851.30x = 11,762.55 × 6,612.90
  4. Step 4: Simplify right side
    7,851.30x = 77,784,566.90
  5. Step 5: Solve for x
    x = 77,784,566.90/7,851.30
  6. Step 6: Final answer
    x = 9,907.22

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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.