Home / 2,509.02-3,462.16-1,389.80

Finding the Fourth Proportional to 2,509.02, 3,462.16 and 1,389.80

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Solution

The fourth proportional to 2,509.02, 3,462.16 and 1,389.80 is: 1,917.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,509.02 : 3,462.16 = 1,389.80 : x
  2. Step 2: Convert to fraction form
    2,509.02/3,462.16 = 1,389.80/x
  3. Step 3: Cross multiply
    2,509.02x = 3,462.16 × 1,389.80
  4. Step 4: Simplify right side
    2,509.02x = 4,811,709.97
  5. Step 5: Solve for x
    x = 4,811,709.97/2,509.02
  6. Step 6: Final answer
    x = 1,917.76

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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.