Home / 5,418.90-8,124.30-1,953.72

Finding the Fourth Proportional to 5,418.90, 8,124.30 and 1,953.72

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Solution

The fourth proportional to 5,418.90, 8,124.30 and 1,953.72 is: 2,929.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,418.90 : 8,124.30 = 1,953.72 : x
  2. Step 2: Convert to fraction form
    5,418.90/8,124.30 = 1,953.72/x
  3. Step 3: Cross multiply
    5,418.90x = 8,124.30 × 1,953.72
  4. Step 4: Simplify right side
    5,418.90x = 15,872,607.40
  5. Step 5: Solve for x
    x = 15,872,607.40/5,418.90
  6. Step 6: Final answer
    x = 2,929.12

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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.