Home / 9,113.09-12,575.70-5,135.00

Finding the Fourth Proportional to 9,113.09, 12,575.70 and 5,135.00

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Solution

The fourth proportional to 9,113.09, 12,575.70 and 5,135.00 is: 7,086.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,113.09 : 12,575.70 = 5,135.00 : x
  2. Step 2: Convert to fraction form
    9,113.09/12,575.70 = 5,135.00/x
  3. Step 3: Cross multiply
    9,113.09x = 12,575.70 × 5,135.00
  4. Step 4: Simplify right side
    9,113.09x = 64,576,156.62
  5. Step 5: Solve for x
    x = 64,576,156.62/9,113.09
  6. Step 6: Final answer
    x = 7,086.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.