Home / 4,290.74-6,431.72-2,904.21

Finding the Fourth Proportional to 4,290.74, 6,431.72 and 2,904.21

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Solution

The fourth proportional to 4,290.74, 6,431.72 and 2,904.21 is: 4,353.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,290.74 : 6,431.72 = 2,904.21 : x
  2. Step 2: Convert to fraction form
    4,290.74/6,431.72 = 2,904.21/x
  3. Step 3: Cross multiply
    4,290.74x = 6,431.72 × 2,904.21
  4. Step 4: Simplify right side
    4,290.74x = 18,679,051.02
  5. Step 5: Solve for x
    x = 18,679,051.02/4,290.74
  6. Step 6: Final answer
    x = 4,353.35

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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.