Home / 5,690.58-7,848.45-3,921.78

Finding the Fourth Proportional to 5,690.58, 7,848.45 and 3,921.78

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Solution

The fourth proportional to 5,690.58, 7,848.45 and 3,921.78 is: 5,408.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,690.58 : 7,848.45 = 3,921.78 : x
  2. Step 2: Convert to fraction form
    5,690.58/7,848.45 = 3,921.78/x
  3. Step 3: Cross multiply
    5,690.58x = 7,848.45 × 3,921.78
  4. Step 4: Simplify right side
    5,690.58x = 30,779,894.24
  5. Step 5: Solve for x
    x = 30,779,894.24/5,690.58
  6. Step 6: Final answer
    x = 5,408.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.