Home / 5,088.40-7,632.53-1,390.55

Finding the Fourth Proportional to 5,088.40, 7,632.53 and 1,390.55

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Solution

The fourth proportional to 5,088.40, 7,632.53 and 1,390.55 is: 2,085.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,088.40 : 7,632.53 = 1,390.55 : x
  2. Step 2: Convert to fraction form
    5,088.40/7,632.53 = 1,390.55/x
  3. Step 3: Cross multiply
    5,088.40x = 7,632.53 × 1,390.55
  4. Step 4: Simplify right side
    5,088.40x = 10,613,407.64
  5. Step 5: Solve for x
    x = 10,613,407.64/5,088.40
  6. Step 6: Final answer
    x = 2,085.81

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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.