Home / 6,438.04-9,646.98-5,139.16

Finding the Fourth Proportional to 6,438.04, 9,646.98 and 5,139.16

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Solution

The fourth proportional to 6,438.04, 9,646.98 and 5,139.16 is: 7,700.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,438.04 : 9,646.98 = 5,139.16 : x
  2. Step 2: Convert to fraction form
    6,438.04/9,646.98 = 5,139.16/x
  3. Step 3: Cross multiply
    6,438.04x = 9,646.98 × 5,139.16
  4. Step 4: Simplify right side
    6,438.04x = 49,577,373.74
  5. Step 5: Solve for x
    x = 49,577,373.74/6,438.04
  6. Step 6: Final answer
    x = 7,700.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.