Home / 1,457.02-2,010.36-1,221.92

Finding the Fourth Proportional to 1,457.02, 2,010.36 and 1,221.92

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Solution

The fourth proportional to 1,457.02, 2,010.36 and 1,221.92 is: 1,685.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,457.02 : 2,010.36 = 1,221.92 : x
  2. Step 2: Convert to fraction form
    1,457.02/2,010.36 = 1,221.92/x
  3. Step 3: Cross multiply
    1,457.02x = 2,010.36 × 1,221.92
  4. Step 4: Simplify right side
    1,457.02x = 2,456,482.93
  5. Step 5: Solve for x
    x = 2,456,482.93/1,457.02
  6. Step 6: Final answer
    x = 1,685.96

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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.