Home / 1,210.20-1,660.96-1,099.48

Finding the Fourth Proportional to 1,210.20, 1,660.96 and 1,099.48

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Solution

The fourth proportional to 1,210.20, 1,660.96 and 1,099.48 is: 1,509.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210.20 : 1,660.96 = 1,099.48 : x
  2. Step 2: Convert to fraction form
    1,210.20/1,660.96 = 1,099.48/x
  3. Step 3: Cross multiply
    1,210.20x = 1,660.96 × 1,099.48
  4. Step 4: Simplify right side
    1,210.20x = 1,826,192.30
  5. Step 5: Solve for x
    x = 1,826,192.30/1,210.20
  6. Step 6: Final answer
    x = 1,509.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.