Home / 3,390.15-5,075.64-2,154.50

Finding the Fourth Proportional to 3,390.15, 5,075.64 and 2,154.50

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Solution

The fourth proportional to 3,390.15, 5,075.64 and 2,154.50 is: 3,225.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390.15 : 5,075.64 = 2,154.50 : x
  2. Step 2: Convert to fraction form
    3,390.15/5,075.64 = 2,154.50/x
  3. Step 3: Cross multiply
    3,390.15x = 5,075.64 × 2,154.50
  4. Step 4: Simplify right side
    3,390.15x = 10,935,441.00
  5. Step 5: Solve for x
    x = 10,935,441.00/3,390.15
  6. Step 6: Final answer
    x = 3,225.65

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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.