Home / 3,127.19-4,315.16-1,800.95

Finding the Fourth Proportional to 3,127.19, 4,315.16 and 1,800.95

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Solution

The fourth proportional to 3,127.19, 4,315.16 and 1,800.95 is: 2,485.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,127.19 : 4,315.16 = 1,800.95 : x
  2. Step 2: Convert to fraction form
    3,127.19/4,315.16 = 1,800.95/x
  3. Step 3: Cross multiply
    3,127.19x = 4,315.16 × 1,800.95
  4. Step 4: Simplify right side
    3,127.19x = 7,771,378.40
  5. Step 5: Solve for x
    x = 7,771,378.40/3,127.19
  6. Step 6: Final answer
    x = 2,485.10

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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.