Home / 7,020.81-10,530.35-4,388.55

Finding the Fourth Proportional to 7,020.81, 10,530.35 and 4,388.55

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Solution

The fourth proportional to 7,020.81, 10,530.35 and 4,388.55 is: 6,582.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,020.81 : 10,530.35 = 4,388.55 : x
  2. Step 2: Convert to fraction form
    7,020.81/10,530.35 = 4,388.55/x
  3. Step 3: Cross multiply
    7,020.81x = 10,530.35 × 4,388.55
  4. Step 4: Simplify right side
    7,020.81x = 46,212,945.55
  5. Step 5: Solve for x
    x = 46,212,945.55/7,020.81
  6. Step 6: Final answer
    x = 6,582.28

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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.