Home / 2,088.23-3,130.72-1,221.53

Finding the Fourth Proportional to 2,088.23, 3,130.72 and 1,221.53

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Solution

The fourth proportional to 2,088.23, 3,130.72 and 1,221.53 is: 1,831.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,088.23 : 3,130.72 = 1,221.53 : x
  2. Step 2: Convert to fraction form
    2,088.23/3,130.72 = 1,221.53/x
  3. Step 3: Cross multiply
    2,088.23x = 3,130.72 × 1,221.53
  4. Step 4: Simplify right side
    2,088.23x = 3,824,268.40
  5. Step 5: Solve for x
    x = 3,824,268.40/2,088.23
  6. Step 6: Final answer
    x = 1,831.34

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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.