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Finding the Fourth Proportional to 1,888.77, 2,831.53 and 718.12

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Solution

The fourth proportional to 1,888.77, 2,831.53 and 718.12 is: 1,076.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,888.77 : 2,831.53 = 718.12 : x
  2. Step 2: Convert to fraction form
    1,888.77/2,831.53 = 718.12/x
  3. Step 3: Cross multiply
    1,888.77x = 2,831.53 × 718.12
  4. Step 4: Simplify right side
    1,888.77x = 2,033,378.32
  5. Step 5: Solve for x
    x = 2,033,378.32/1,888.77
  6. Step 6: Final answer
    x = 1,076.56

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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.