Home / 9,138.15-13,707.09-2,898.16

Finding the Fourth Proportional to 9,138.15, 13,707.09 and 2,898.16

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Solution

The fourth proportional to 9,138.15, 13,707.09 and 2,898.16 is: 4,347.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,138.15 : 13,707.09 = 2,898.16 : x
  2. Step 2: Convert to fraction form
    9,138.15/13,707.09 = 2,898.16/x
  3. Step 3: Cross multiply
    9,138.15x = 13,707.09 × 2,898.16
  4. Step 4: Simplify right side
    9,138.15x = 39,725,382.79
  5. Step 5: Solve for x
    x = 39,725,382.79/9,138.15
  6. Step 6: Final answer
    x = 4,347.20

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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.