Home / 1,887.62-2,831.46-655.07

Finding the Fourth Proportional to 1,887.62, 2,831.46 and 655.07

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Solution

The fourth proportional to 1,887.62, 2,831.46 and 655.07 is: 982.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,887.62 : 2,831.46 = 655.07 : x
  2. Step 2: Convert to fraction form
    1,887.62/2,831.46 = 655.07/x
  3. Step 3: Cross multiply
    1,887.62x = 2,831.46 × 655.07
  4. Step 4: Simplify right side
    1,887.62x = 1,854,804.50
  5. Step 5: Solve for x
    x = 1,854,804.50/1,887.62
  6. Step 6: Final answer
    x = 982.62

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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.