Home / 1,392.29-2,088.80-526.61

Finding the Fourth Proportional to 1,392.29, 2,088.80 and 526.61

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Solution

The fourth proportional to 1,392.29, 2,088.80 and 526.61 is: 790.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392.29 : 2,088.80 = 526.61 : x
  2. Step 2: Convert to fraction form
    1,392.29/2,088.80 = 526.61/x
  3. Step 3: Cross multiply
    1,392.29x = 2,088.80 × 526.61
  4. Step 4: Simplify right side
    1,392.29x = 1,099,982.97
  5. Step 5: Solve for x
    x = 1,099,982.97/1,392.29
  6. Step 6: Final answer
    x = 790.05

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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.