Home / 2,117.55-3,176.24-657.66

Finding the Fourth Proportional to 2,117.55, 3,176.24 and 657.66

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Solution

The fourth proportional to 2,117.55, 3,176.24 and 657.66 is: 986.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,117.55 : 3,176.24 = 657.66 : x
  2. Step 2: Convert to fraction form
    2,117.55/3,176.24 = 657.66/x
  3. Step 3: Cross multiply
    2,117.55x = 3,176.24 × 657.66
  4. Step 4: Simplify right side
    2,117.55x = 2,088,882.71
  5. Step 5: Solve for x
    x = 2,088,882.71/2,117.55
  6. Step 6: Final answer
    x = 986.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.