Home / 1,511.60-2,263.80-741.20

Finding the Fourth Proportional to 1,511.60, 2,263.80 and 741.20

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Solution

The fourth proportional to 1,511.60, 2,263.80 and 741.20 is: 1,110.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,511.60 : 2,263.80 = 741.20 : x
  2. Step 2: Convert to fraction form
    1,511.60/2,263.80 = 741.20/x
  3. Step 3: Cross multiply
    1,511.60x = 2,263.80 × 741.20
  4. Step 4: Simplify right side
    1,511.60x = 1,677,928.56
  5. Step 5: Solve for x
    x = 1,677,928.56/1,511.60
  6. Step 6: Final answer
    x = 1,110.03

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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.