Home / 3,177.04-4,385.18-1,918.13

Finding the Fourth Proportional to 3,177.04, 4,385.18 and 1,918.13

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Solution

The fourth proportional to 3,177.04, 4,385.18 and 1,918.13 is: 2,647.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,177.04 : 4,385.18 = 1,918.13 : x
  2. Step 2: Convert to fraction form
    3,177.04/4,385.18 = 1,918.13/x
  3. Step 3: Cross multiply
    3,177.04x = 4,385.18 × 1,918.13
  4. Step 4: Simplify right side
    3,177.04x = 8,411,345.31
  5. Step 5: Solve for x
    x = 8,411,345.31/3,177.04
  6. Step 6: Final answer
    x = 2,647.54

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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.