Home / 5,215,111.10-7,196,841.75-2,891,946.20

Finding the Fourth Proportional to 5,215,111.10, 7,196,841.75 and 2,891,946.20

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Solution

The fourth proportional to 5,215,111.10, 7,196,841.75 and 2,891,946.20 is: 3,990,879.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,215,111.10 : 7,196,841.75 = 2,891,946.20 : x
  2. Step 2: Convert to fraction form
    5,215,111.10/7,196,841.75 = 2,891,946.20/x
  3. Step 3: Cross multiply
    5,215,111.10x = 7,196,841.75 × 2,891,946.20
  4. Step 4: Simplify right side
    5,215,111.10x = 20,812,879,178,410.63
  5. Step 5: Solve for x
    x = 20,812,879,178,410.63/5,215,111.10
  6. Step 6: Final answer
    x = 3,990,879.35

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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.