Home / 2,505.40-3,457.44-1,386.32

Finding the Fourth Proportional to 2,505.40, 3,457.44 and 1,386.32

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Solution

The fourth proportional to 2,505.40, 3,457.44 and 1,386.32 is: 1,913.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,505.40 : 3,457.44 = 1,386.32 : x
  2. Step 2: Convert to fraction form
    2,505.40/3,457.44 = 1,386.32/x
  3. Step 3: Cross multiply
    2,505.40x = 3,457.44 × 1,386.32
  4. Step 4: Simplify right side
    2,505.40x = 4,793,113.57
  5. Step 5: Solve for x
    x = 4,793,113.57/2,505.40
  6. Step 6: Final answer
    x = 1,913.11

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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.