Home / 7,405.90-10,220.09-4,048.65

Finding the Fourth Proportional to 7,405.90, 10,220.09 and 4,048.65

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Solution

The fourth proportional to 7,405.90, 10,220.09 and 4,048.65 is: 5,587.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,405.90 : 10,220.09 = 4,048.65 : x
  2. Step 2: Convert to fraction form
    7,405.90/10,220.09 = 4,048.65/x
  3. Step 3: Cross multiply
    7,405.90x = 10,220.09 × 4,048.65
  4. Step 4: Simplify right side
    7,405.90x = 41,377,547.14
  5. Step 5: Solve for x
    x = 41,377,547.14/7,405.90
  6. Step 6: Final answer
    x = 5,587.11

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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.