Home / 5,089.23-7,632.63-1,390.57

Finding the Fourth Proportional to 5,089.23, 7,632.63 and 1,390.57

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Solution

The fourth proportional to 5,089.23, 7,632.63 and 1,390.57 is: 2,085.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,089.23 : 7,632.63 = 1,390.57 : x
  2. Step 2: Convert to fraction form
    5,089.23/7,632.63 = 1,390.57/x
  3. Step 3: Cross multiply
    5,089.23x = 7,632.63 × 1,390.57
  4. Step 4: Simplify right side
    5,089.23x = 10,613,706.30
  5. Step 5: Solve for x
    x = 10,613,706.30/5,089.23
  6. Step 6: Final answer
    x = 2,085.52

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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.