Home / 2,505.17-3,457.34-1,386.47

Finding the Fourth Proportional to 2,505.17, 3,457.34 and 1,386.47

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Solution

The fourth proportional to 2,505.17, 3,457.34 and 1,386.47 is: 1,913.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,505.17 : 3,457.34 = 1,386.47 : x
  2. Step 2: Convert to fraction form
    2,505.17/3,457.34 = 1,386.47/x
  3. Step 3: Cross multiply
    2,505.17x = 3,457.34 × 1,386.47
  4. Step 4: Simplify right side
    2,505.17x = 4,793,486.63
  5. Step 5: Solve for x
    x = 4,793,486.63/2,505.17
  6. Step 6: Final answer
    x = 1,913.44

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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.