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Finding the Fourth Proportional to 2,920.86, 4,384.76 and 2,305.01

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Solution

The fourth proportional to 2,920.86, 4,384.76 and 2,305.01 is: 3,460.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,920.86 : 4,384.76 = 2,305.01 : x
  2. Step 2: Convert to fraction form
    2,920.86/4,384.76 = 2,305.01/x
  3. Step 3: Cross multiply
    2,920.86x = 4,384.76 × 2,305.01
  4. Step 4: Simplify right side
    2,920.86x = 10,106,915.65
  5. Step 5: Solve for x
    x = 10,106,915.65/2,920.86
  6. Step 6: Final answer
    x = 3,460.25

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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.