Home / 2,421.56-3,622.80-1,929.50

Finding the Fourth Proportional to 2,421.56, 3,622.80 and 1,929.50

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Solution

The fourth proportional to 2,421.56, 3,622.80 and 1,929.50 is: 2,886.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,421.56 : 3,622.80 = 1,929.50 : x
  2. Step 2: Convert to fraction form
    2,421.56/3,622.80 = 1,929.50/x
  3. Step 3: Cross multiply
    2,421.56x = 3,622.80 × 1,929.50
  4. Step 4: Simplify right side
    2,421.56x = 6,990,192.60
  5. Step 5: Solve for x
    x = 6,990,192.60/2,421.56
  6. Step 6: Final answer
    x = 2,886.65

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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.