Home / 3,886.45-5,831.70-1,695.40

Finding the Fourth Proportional to 3,886.45, 5,831.70 and 1,695.40

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Solution

The fourth proportional to 3,886.45, 5,831.70 and 1,695.40 is: 2,543.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,886.45 : 5,831.70 = 1,695.40 : x
  2. Step 2: Convert to fraction form
    3,886.45/5,831.70 = 1,695.40/x
  3. Step 3: Cross multiply
    3,886.45x = 5,831.70 × 1,695.40
  4. Step 4: Simplify right side
    3,886.45x = 9,887,064.18
  5. Step 5: Solve for x
    x = 9,887,064.18/3,886.45
  6. Step 6: Final answer
    x = 2,543.98

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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.