Home / 3,130.50-4,320.09-1,889.22

Finding the Fourth Proportional to 3,130.50, 4,320.09 and 1,889.22

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Solution

The fourth proportional to 3,130.50, 4,320.09 and 1,889.22 is: 2,607.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,130.50 : 4,320.09 = 1,889.22 : x
  2. Step 2: Convert to fraction form
    3,130.50/4,320.09 = 1,889.22/x
  3. Step 3: Cross multiply
    3,130.50x = 4,320.09 × 1,889.22
  4. Step 4: Simplify right side
    3,130.50x = 8,161,600.43
  5. Step 5: Solve for x
    x = 8,161,600.43/3,130.50
  6. Step 6: Final answer
    x = 2,607.12

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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.