Home / 9,120.18-12,586.02-5,087.36

Finding the Fourth Proportional to 9,120.18, 12,586.02 and 5,087.36

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Solution

The fourth proportional to 9,120.18, 12,586.02 and 5,087.36 is: 7,020.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,120.18 : 12,586.02 = 5,087.36 : x
  2. Step 2: Convert to fraction form
    9,120.18/12,586.02 = 5,087.36/x
  3. Step 3: Cross multiply
    9,120.18x = 12,586.02 × 5,087.36
  4. Step 4: Simplify right side
    9,120.18x = 64,029,627.09
  5. Step 5: Solve for x
    x = 64,029,627.09/9,120.18
  6. Step 6: Final answer
    x = 7,020.65

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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.