Home / 4,914.60-7,368.30-1,991.40

Finding the Fourth Proportional to 4,914.60, 7,368.30 and 1,991.40

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Solution

The fourth proportional to 4,914.60, 7,368.30 and 1,991.40 is: 2,985.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,914.60 : 7,368.30 = 1,991.40 : x
  2. Step 2: Convert to fraction form
    4,914.60/7,368.30 = 1,991.40/x
  3. Step 3: Cross multiply
    4,914.60x = 7,368.30 × 1,991.40
  4. Step 4: Simplify right side
    4,914.60x = 14,673,232.62
  5. Step 5: Solve for x
    x = 14,673,232.62/4,914.60
  6. Step 6: Final answer
    x = 2,985.64

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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.