Home / 2,312.13-3,190.73-1,485.57

Finding the Fourth Proportional to 2,312.13, 3,190.73 and 1,485.57

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Solution

The fourth proportional to 2,312.13, 3,190.73 and 1,485.57 is: 2,050.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,312.13 : 3,190.73 = 1,485.57 : x
  2. Step 2: Convert to fraction form
    2,312.13/3,190.73 = 1,485.57/x
  3. Step 3: Cross multiply
    2,312.13x = 3,190.73 × 1,485.57
  4. Step 4: Simplify right side
    2,312.13x = 4,740,040.53
  5. Step 5: Solve for x
    x = 4,740,040.53/2,312.13
  6. Step 6: Final answer
    x = 2,050.08

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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.