Home / 2,900.24-4,005.16-2,478.12

Finding the Fourth Proportional to 2,900.24, 4,005.16 and 2,478.12

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Solution

The fourth proportional to 2,900.24, 4,005.16 and 2,478.12 is: 3,422.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,900.24 : 4,005.16 = 2,478.12 : x
  2. Step 2: Convert to fraction form
    2,900.24/4,005.16 = 2,478.12/x
  3. Step 3: Cross multiply
    2,900.24x = 4,005.16 × 2,478.12
  4. Step 4: Simplify right side
    2,900.24x = 9,925,267.10
  5. Step 5: Solve for x
    x = 9,925,267.10/2,900.24
  6. Step 6: Final answer
    x = 3,422.22

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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.