Home / 3,715.32-5,130.57-2,391.31

Finding the Fourth Proportional to 3,715.32, 5,130.57 and 2,391.31

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Solution

The fourth proportional to 3,715.32, 5,130.57 and 2,391.31 is: 3,302.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,715.32 : 5,130.57 = 2,391.31 : x
  2. Step 2: Convert to fraction form
    3,715.32/5,130.57 = 2,391.31/x
  3. Step 3: Cross multiply
    3,715.32x = 5,130.57 × 2,391.31
  4. Step 4: Simplify right side
    3,715.32x = 12,268,783.35
  5. Step 5: Solve for x
    x = 12,268,783.35/3,715.32
  6. Step 6: Final answer
    x = 3,302.21

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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.