Home / 7,417.89-11,127.18-4,128.51

Finding the Fourth Proportional to 7,417.89, 11,127.18 and 4,128.51

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Solution

The fourth proportional to 7,417.89, 11,127.18 and 4,128.51 is: 6,192.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,417.89 : 11,127.18 = 4,128.51 : x
  2. Step 2: Convert to fraction form
    7,417.89/11,127.18 = 4,128.51/x
  3. Step 3: Cross multiply
    7,417.89x = 11,127.18 × 4,128.51
  4. Step 4: Simplify right side
    7,417.89x = 45,938,673.90
  5. Step 5: Solve for x
    x = 45,938,673.90/7,417.89
  6. Step 6: Final answer
    x = 6,192.96

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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.