Home / 4,290.48-6,409.10-3,111.12

Finding the Fourth Proportional to 4,290.48, 6,409.10 and 3,111.12

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Solution

The fourth proportional to 4,290.48, 6,409.10 and 3,111.12 is: 4,647.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,290.48 : 6,409.10 = 3,111.12 : x
  2. Step 2: Convert to fraction form
    4,290.48/6,409.10 = 3,111.12/x
  3. Step 3: Cross multiply
    4,290.48x = 6,409.10 × 3,111.12
  4. Step 4: Simplify right side
    4,290.48x = 19,939,479.19
  5. Step 5: Solve for x
    x = 19,939,479.19/4,290.48
  6. Step 6: Final answer
    x = 4,647.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.