Home / 1,801.36-2,485.20-1,210.96

Finding the Fourth Proportional to 1,801.36, 2,485.20 and 1,210.96

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Solution

The fourth proportional to 1,801.36, 2,485.20 and 1,210.96 is: 1,670.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,801.36 : 2,485.20 = 1,210.96 : x
  2. Step 2: Convert to fraction form
    1,801.36/2,485.20 = 1,210.96/x
  3. Step 3: Cross multiply
    1,801.36x = 2,485.20 × 1,210.96
  4. Step 4: Simplify right side
    1,801.36x = 3,009,471.58
  5. Step 5: Solve for x
    x = 3,009,471.58/1,801.36
  6. Step 6: Final answer
    x = 1,670.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.