Home / 1,392.40-2,088.64-1,232.08

Finding the Fourth Proportional to 1,392.40, 2,088.64 and 1,232.08

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Solution

The fourth proportional to 1,392.40, 2,088.64 and 1,232.08 is: 1,848.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392.40 : 2,088.64 = 1,232.08 : x
  2. Step 2: Convert to fraction form
    1,392.40/2,088.64 = 1,232.08/x
  3. Step 3: Cross multiply
    1,392.40x = 2,088.64 × 1,232.08
  4. Step 4: Simplify right side
    1,392.40x = 2,573,371.57
  5. Step 5: Solve for x
    x = 2,573,371.57/1,392.40
  6. Step 6: Final answer
    x = 1,848.16

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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.