Home / 3,937.10-5,430.39-2,538.50

Finding the Fourth Proportional to 3,937.10, 5,430.39 and 2,538.50

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Solution

The fourth proportional to 3,937.10, 5,430.39 and 2,538.50 is: 3,501.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,937.10 : 5,430.39 = 2,538.50 : x
  2. Step 2: Convert to fraction form
    3,937.10/5,430.39 = 2,538.50/x
  3. Step 3: Cross multiply
    3,937.10x = 5,430.39 × 2,538.50
  4. Step 4: Simplify right side
    3,937.10x = 13,785,045.02
  5. Step 5: Solve for x
    x = 13,785,045.02/3,937.10
  6. Step 6: Final answer
    x = 3,501.32

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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.