Home / 1,971.13-2,956.61-490.35

Finding the Fourth Proportional to 1,971.13, 2,956.61 and 490.35

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Solution

The fourth proportional to 1,971.13, 2,956.61 and 490.35 is: 735.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,971.13 : 2,956.61 = 490.35 : x
  2. Step 2: Convert to fraction form
    1,971.13/2,956.61 = 490.35/x
  3. Step 3: Cross multiply
    1,971.13x = 2,956.61 × 490.35
  4. Step 4: Simplify right side
    1,971.13x = 1,449,771.26
  5. Step 5: Solve for x
    x = 1,449,771.26/1,971.13
  6. Step 6: Final answer
    x = 735.50

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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.