Home / 9,109.49-12,571.13-5,130.67

Finding the Fourth Proportional to 9,109.49, 12,571.13 and 5,130.67

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Solution

The fourth proportional to 9,109.49, 12,571.13 and 5,130.67 is: 7,080.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,109.49 : 12,571.13 = 5,130.67 : x
  2. Step 2: Convert to fraction form
    9,109.49/12,571.13 = 5,130.67/x
  3. Step 3: Cross multiply
    9,109.49x = 12,571.13 × 5,130.67
  4. Step 4: Simplify right side
    9,109.49x = 64,498,300.96
  5. Step 5: Solve for x
    x = 64,498,300.96/9,109.49
  6. Step 6: Final answer
    x = 7,080.35

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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.