Home / 7,417.20-11,111.40-4,124.40

Finding the Fourth Proportional to 7,417.20, 11,111.40 and 4,124.40

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Solution

The fourth proportional to 7,417.20, 11,111.40 and 4,124.40 is: 6,178.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,417.20 : 11,111.40 = 4,124.40 : x
  2. Step 2: Convert to fraction form
    7,417.20/11,111.40 = 4,124.40/x
  3. Step 3: Cross multiply
    7,417.20x = 11,111.40 × 4,124.40
  4. Step 4: Simplify right side
    7,417.20x = 45,827,858.16
  5. Step 5: Solve for x
    x = 45,827,858.16/7,417.20
  6. Step 6: Final answer
    x = 6,178.59

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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.