Home / 5,390.04-7,437.78-2,999.91

Finding the Fourth Proportional to 5,390.04, 7,437.78 and 2,999.91

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Solution

The fourth proportional to 5,390.04, 7,437.78 and 2,999.91 is: 4,139.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,390.04 : 7,437.78 = 2,999.91 : x
  2. Step 2: Convert to fraction form
    5,390.04/7,437.78 = 2,999.91/x
  3. Step 3: Cross multiply
    5,390.04x = 7,437.78 × 2,999.91
  4. Step 4: Simplify right side
    5,390.04x = 22,312,670.60
  5. Step 5: Solve for x
    x = 22,312,670.60/5,390.04
  6. Step 6: Final answer
    x = 4,139.61

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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.