Home / 5,139.64-7,107.18-4,907.32

Finding the Fourth Proportional to 5,139.64, 7,107.18 and 4,907.32

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Solution

The fourth proportional to 5,139.64, 7,107.18 and 4,907.32 is: 6,785.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,139.64 : 7,107.18 = 4,907.32 : x
  2. Step 2: Convert to fraction form
    5,139.64/7,107.18 = 4,907.32/x
  3. Step 3: Cross multiply
    5,139.64x = 7,107.18 × 4,907.32
  4. Step 4: Simplify right side
    5,139.64x = 34,877,206.56
  5. Step 5: Solve for x
    x = 34,877,206.56/5,139.64
  6. Step 6: Final answer
    x = 6,785.92

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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.