Home / 2,508.48-3,461.49-1,389.40

Finding the Fourth Proportional to 2,508.48, 3,461.49 and 1,389.40

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Solution

The fourth proportional to 2,508.48, 3,461.49 and 1,389.40 is: 1,917.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,508.48 : 3,461.49 = 1,389.40 : x
  2. Step 2: Convert to fraction form
    2,508.48/3,461.49 = 1,389.40/x
  3. Step 3: Cross multiply
    2,508.48x = 3,461.49 × 1,389.40
  4. Step 4: Simplify right side
    2,508.48x = 4,809,385.55
  5. Step 5: Solve for x
    x = 4,809,385.55/2,508.48
  6. Step 6: Final answer
    x = 1,917.25

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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.