Home / 5,420.13-7,479.86-3,030.36

Finding the Fourth Proportional to 5,420.13, 7,479.86 and 3,030.36

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Solution

The fourth proportional to 5,420.13, 7,479.86 and 3,030.36 is: 4,181.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,420.13 : 7,479.86 = 3,030.36 : x
  2. Step 2: Convert to fraction form
    5,420.13/7,479.86 = 3,030.36/x
  3. Step 3: Cross multiply
    5,420.13x = 7,479.86 × 3,030.36
  4. Step 4: Simplify right side
    5,420.13x = 22,666,653.40
  5. Step 5: Solve for x
    x = 22,666,653.40/5,420.13
  6. Step 6: Final answer
    x = 4,181.94

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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.