Home / 3,130.76-4,706.40-2,900.72

Finding the Fourth Proportional to 3,130.76, 4,706.40 and 2,900.72

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Solution

The fourth proportional to 3,130.76, 4,706.40 and 2,900.72 is: 4,360.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,130.76 : 4,706.40 = 2,900.72 : x
  2. Step 2: Convert to fraction form
    3,130.76/4,706.40 = 2,900.72/x
  3. Step 3: Cross multiply
    3,130.76x = 4,706.40 × 2,900.72
  4. Step 4: Simplify right side
    3,130.76x = 13,651,948.61
  5. Step 5: Solve for x
    x = 13,651,948.61/3,130.76
  6. Step 6: Final answer
    x = 4,360.59

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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.