Home / 1,457.24-2,172.13-1,340.60

Finding the Fourth Proportional to 1,457.24, 2,172.13 and 1,340.60

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Solution

The fourth proportional to 1,457.24, 2,172.13 and 1,340.60 is: 1,998.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,457.24 : 2,172.13 = 1,340.60 : x
  2. Step 2: Convert to fraction form
    1,457.24/2,172.13 = 1,340.60/x
  3. Step 3: Cross multiply
    1,457.24x = 2,172.13 × 1,340.60
  4. Step 4: Simplify right side
    1,457.24x = 2,911,957.48
  5. Step 5: Solve for x
    x = 2,911,957.48/1,457.24
  6. Step 6: Final answer
    x = 1,998.27

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.