Home / 3,130.38-4,320.68-1,804.55

Finding the Fourth Proportional to 3,130.38, 4,320.68 and 1,804.55

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Solution

The fourth proportional to 3,130.38, 4,320.68 and 1,804.55 is: 2,490.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,130.38 : 4,320.68 = 1,804.55 : x
  2. Step 2: Convert to fraction form
    3,130.38/4,320.68 = 1,804.55/x
  3. Step 3: Cross multiply
    3,130.38x = 4,320.68 × 1,804.55
  4. Step 4: Simplify right side
    3,130.38x = 7,796,852.47
  5. Step 5: Solve for x
    x = 7,796,852.47/3,130.38
  6. Step 6: Final answer
    x = 2,490.70

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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.