Home / 3,907.20-5,389.20-2,510.40

Finding the Fourth Proportional to 3,907.20, 5,389.20 and 2,510.40

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Solution

The fourth proportional to 3,907.20, 5,389.20 and 2,510.40 is: 3,462.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,907.20 : 5,389.20 = 2,510.40 : x
  2. Step 2: Convert to fraction form
    3,907.20/5,389.20 = 2,510.40/x
  3. Step 3: Cross multiply
    3,907.20x = 5,389.20 × 2,510.40
  4. Step 4: Simplify right side
    3,907.20x = 13,529,047.68
  5. Step 5: Solve for x
    x = 13,529,047.68/3,907.20
  6. Step 6: Final answer
    x = 3,462.59

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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.