Home / 7,075.76-10,615.91-2,145.87

Finding the Fourth Proportional to 7,075.76, 10,615.91 and 2,145.87

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Solution

The fourth proportional to 7,075.76, 10,615.91 and 2,145.87 is: 3,219.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,075.76 : 10,615.91 = 2,145.87 : x
  2. Step 2: Convert to fraction form
    7,075.76/10,615.91 = 2,145.87/x
  3. Step 3: Cross multiply
    7,075.76x = 10,615.91 × 2,145.87
  4. Step 4: Simplify right side
    7,075.76x = 22,780,352.06
  5. Step 5: Solve for x
    x = 22,780,352.06/7,075.76
  6. Step 6: Final answer
    x = 3,219.49

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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.