Home / 2,505.58-3,457.66-1,386.55

Finding the Fourth Proportional to 2,505.58, 3,457.66 and 1,386.55

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Solution

The fourth proportional to 2,505.58, 3,457.66 and 1,386.55 is: 1,913.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,505.58 : 3,457.66 = 1,386.55 : x
  2. Step 2: Convert to fraction form
    2,505.58/3,457.66 = 1,386.55/x
  3. Step 3: Cross multiply
    2,505.58x = 3,457.66 × 1,386.55
  4. Step 4: Simplify right side
    2,505.58x = 4,794,218.47
  5. Step 5: Solve for x
    x = 4,794,218.47/2,505.58
  6. Step 6: Final answer
    x = 1,913.42

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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.