Home / 2,119.64-2,925.11-1,188.14

Finding the Fourth Proportional to 2,119.64, 2,925.11 and 1,188.14

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Solution

The fourth proportional to 2,119.64, 2,925.11 and 1,188.14 is: 1,639.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,119.64 : 2,925.11 = 1,188.14 : x
  2. Step 2: Convert to fraction form
    2,119.64/2,925.11 = 1,188.14/x
  3. Step 3: Cross multiply
    2,119.64x = 2,925.11 × 1,188.14
  4. Step 4: Simplify right side
    2,119.64x = 3,475,444.99
  5. Step 5: Solve for x
    x = 3,475,444.99/2,119.64
  6. Step 6: Final answer
    x = 1,639.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.