Home / 3,145.95-4,341.47-1,729.67

Finding the Fourth Proportional to 3,145.95, 4,341.47 and 1,729.67

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Solution

The fourth proportional to 3,145.95, 4,341.47 and 1,729.67 is: 2,386.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,145.95 : 4,341.47 = 1,729.67 : x
  2. Step 2: Convert to fraction form
    3,145.95/4,341.47 = 1,729.67/x
  3. Step 3: Cross multiply
    3,145.95x = 4,341.47 × 1,729.67
  4. Step 4: Simplify right side
    3,145.95x = 7,509,280.06
  5. Step 5: Solve for x
    x = 7,509,280.06/3,145.95
  6. Step 6: Final answer
    x = 2,386.97

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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.