Home / 1,781.47-2,457.15-1,190.98

Finding the Fourth Proportional to 1,781.47, 2,457.15 and 1,190.98

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Solution

The fourth proportional to 1,781.47, 2,457.15 and 1,190.98 is: 1,642.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,781.47 : 2,457.15 = 1,190.98 : x
  2. Step 2: Convert to fraction form
    1,781.47/2,457.15 = 1,190.98/x
  3. Step 3: Cross multiply
    1,781.47x = 2,457.15 × 1,190.98
  4. Step 4: Simplify right side
    1,781.47x = 2,926,416.51
  5. Step 5: Solve for x
    x = 2,926,416.51/1,781.47
  6. Step 6: Final answer
    x = 1,642.70

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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.