Home / 1,220.32-1,826.70-1,045.36

Finding the Fourth Proportional to 1,220.32, 1,826.70 and 1,045.36

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Solution

The fourth proportional to 1,220.32, 1,826.70 and 1,045.36 is: 1,564.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220.32 : 1,826.70 = 1,045.36 : x
  2. Step 2: Convert to fraction form
    1,220.32/1,826.70 = 1,045.36/x
  3. Step 3: Cross multiply
    1,220.32x = 1,826.70 × 1,045.36
  4. Step 4: Simplify right side
    1,220.32x = 1,909,559.11
  5. Step 5: Solve for x
    x = 1,909,559.11/1,220.32
  6. Step 6: Final answer
    x = 1,564.80

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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.