Home / 9,109.65-12,571.07-5,130.68

Finding the Fourth Proportional to 9,109.65, 12,571.07 and 5,130.68

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Solution

The fourth proportional to 9,109.65, 12,571.07 and 5,130.68 is: 7,080.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,109.65 : 12,571.07 = 5,130.68 : x
  2. Step 2: Convert to fraction form
    9,109.65/12,571.07 = 5,130.68/x
  3. Step 3: Cross multiply
    9,109.65x = 12,571.07 × 5,130.68
  4. Step 4: Simplify right side
    9,109.65x = 64,498,048.92
  5. Step 5: Solve for x
    x = 64,498,048.92/9,109.65
  6. Step 6: Final answer
    x = 7,080.19

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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.