Home / 3,106.15-4,280.47-2,903.11

Finding the Fourth Proportional to 3,106.15, 4,280.47 and 2,903.11

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Solution

The fourth proportional to 3,106.15, 4,280.47 and 2,903.11 is: 4,000.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,106.15 : 4,280.47 = 2,903.11 : x
  2. Step 2: Convert to fraction form
    3,106.15/4,280.47 = 2,903.11/x
  3. Step 3: Cross multiply
    3,106.15x = 4,280.47 × 2,903.11
  4. Step 4: Simplify right side
    3,106.15x = 12,426,675.26
  5. Step 5: Solve for x
    x = 12,426,675.26/3,106.15
  6. Step 6: Final answer
    x = 4,000.67

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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.