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Finding the Fourth Proportional to 2,900.07, 4,315.21 and 2,890.35

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Solution

The fourth proportional to 2,900.07, 4,315.21 and 2,890.35 is: 4,300.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,900.07 : 4,315.21 = 2,890.35 : x
  2. Step 2: Convert to fraction form
    2,900.07/4,315.21 = 2,890.35/x
  3. Step 3: Cross multiply
    2,900.07x = 4,315.21 × 2,890.35
  4. Step 4: Simplify right side
    2,900.07x = 12,472,445.65
  5. Step 5: Solve for x
    x = 12,472,445.65/2,900.07
  6. Step 6: Final answer
    x = 4,300.75

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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.