Home / 1,645.16-2,269.92-1,056.50

Finding the Fourth Proportional to 1,645.16, 2,269.92 and 1,056.50

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Solution

The fourth proportional to 1,645.16, 2,269.92 and 1,056.50 is: 1,457.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,645.16 : 2,269.92 = 1,056.50 : x
  2. Step 2: Convert to fraction form
    1,645.16/2,269.92 = 1,056.50/x
  3. Step 3: Cross multiply
    1,645.16x = 2,269.92 × 1,056.50
  4. Step 4: Simplify right side
    1,645.16x = 2,398,159.13
  5. Step 5: Solve for x
    x = 2,398,159.13/1,645.16
  6. Step 6: Final answer
    x = 1,457.71

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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.