Home / 3,130.22-4,318.30-1,803.58

Finding the Fourth Proportional to 3,130.22, 4,318.30 and 1,803.58

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Solution

The fourth proportional to 3,130.22, 4,318.30 and 1,803.58 is: 2,488.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,130.22 : 4,318.30 = 1,803.58 : x
  2. Step 2: Convert to fraction form
    3,130.22/4,318.30 = 1,803.58/x
  3. Step 3: Cross multiply
    3,130.22x = 4,318.30 × 1,803.58
  4. Step 4: Simplify right side
    3,130.22x = 7,788,399.51
  5. Step 5: Solve for x
    x = 7,788,399.51/3,130.22
  6. Step 6: Final answer
    x = 2,488.13

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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.