Home / 1,186.02-1,636.33-766.60

Finding the Fourth Proportional to 1,186.02, 1,636.33 and 766.60

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Solution

The fourth proportional to 1,186.02, 1,636.33 and 766.60 is: 1,057.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186.02 : 1,636.33 = 766.60 : x
  2. Step 2: Convert to fraction form
    1,186.02/1,636.33 = 766.60/x
  3. Step 3: Cross multiply
    1,186.02x = 1,636.33 × 766.60
  4. Step 4: Simplify right side
    1,186.02x = 1,254,410.58
  5. Step 5: Solve for x
    x = 1,254,410.58/1,186.02
  6. Step 6: Final answer
    x = 1,057.66

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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.