Home / 9,121.19-12,586.95-5,142.24

Finding the Fourth Proportional to 9,121.19, 12,586.95 and 5,142.24

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Solution

The fourth proportional to 9,121.19, 12,586.95 and 5,142.24 is: 7,096.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,121.19 : 12,586.95 = 5,142.24 : x
  2. Step 2: Convert to fraction form
    9,121.19/12,586.95 = 5,142.24/x
  3. Step 3: Cross multiply
    9,121.19x = 12,586.95 × 5,142.24
  4. Step 4: Simplify right side
    9,121.19x = 64,725,117.77
  5. Step 5: Solve for x
    x = 64,725,117.77/9,121.19
  6. Step 6: Final answer
    x = 7,096.13

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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.