Home / 1,576.48-2,176.20-986.88

Finding the Fourth Proportional to 1,576.48, 2,176.20 and 986.88

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Solution

The fourth proportional to 1,576.48, 2,176.20 and 986.88 is: 1,362.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,576.48 : 2,176.20 = 986.88 : x
  2. Step 2: Convert to fraction form
    1,576.48/2,176.20 = 986.88/x
  3. Step 3: Cross multiply
    1,576.48x = 2,176.20 × 986.88
  4. Step 4: Simplify right side
    1,576.48x = 2,147,648.26
  5. Step 5: Solve for x
    x = 2,147,648.26/1,576.48
  6. Step 6: Final answer
    x = 1,362.31

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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.