Home / 3,030.40-4,182.16-1,686.18

Finding the Fourth Proportional to 3,030.40, 4,182.16 and 1,686.18

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Solution

The fourth proportional to 3,030.40, 4,182.16 and 1,686.18 is: 2,327.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,030.40 : 4,182.16 = 1,686.18 : x
  2. Step 2: Convert to fraction form
    3,030.40/4,182.16 = 1,686.18/x
  3. Step 3: Cross multiply
    3,030.40x = 4,182.16 × 1,686.18
  4. Step 4: Simplify right side
    3,030.40x = 7,051,874.55
  5. Step 5: Solve for x
    x = 7,051,874.55/3,030.40
  6. Step 6: Final answer
    x = 2,327.04

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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.