Home / 1,680.16-2,520.48-526.08

Finding the Fourth Proportional to 1,680.16, 2,520.48 and 526.08

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Solution

The fourth proportional to 1,680.16, 2,520.48 and 526.08 is: 789.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,680.16 : 2,520.48 = 526.08 : x
  2. Step 2: Convert to fraction form
    1,680.16/2,520.48 = 526.08/x
  3. Step 3: Cross multiply
    1,680.16x = 2,520.48 × 526.08
  4. Step 4: Simplify right side
    1,680.16x = 1,325,974.12
  5. Step 5: Solve for x
    x = 1,325,974.12/1,680.16
  6. Step 6: Final answer
    x = 789.20

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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.