Home / 1,576.35-2,175.23-913.07

Finding the Fourth Proportional to 1,576.35, 2,175.23 and 913.07

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Solution

The fourth proportional to 1,576.35, 2,175.23 and 913.07 is: 1,259.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,576.35 : 2,175.23 = 913.07 : x
  2. Step 2: Convert to fraction form
    1,576.35/2,175.23 = 913.07/x
  3. Step 3: Cross multiply
    1,576.35x = 2,175.23 × 913.07
  4. Step 4: Simplify right side
    1,576.35x = 1,986,121.81
  5. Step 5: Solve for x
    x = 1,986,121.81/1,576.35
  6. Step 6: Final answer
    x = 1,259.95

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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.