Home / 3,397.18-4,688.06-1,905.08

Finding the Fourth Proportional to 3,397.18, 4,688.06 and 1,905.08

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Solution

The fourth proportional to 3,397.18, 4,688.06 and 1,905.08 is: 2,628.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,397.18 : 4,688.06 = 1,905.08 : x
  2. Step 2: Convert to fraction form
    3,397.18/4,688.06 = 1,905.08/x
  3. Step 3: Cross multiply
    3,397.18x = 4,688.06 × 1,905.08
  4. Step 4: Simplify right side
    3,397.18x = 8,931,129.34
  5. Step 5: Solve for x
    x = 8,931,129.34/3,397.18
  6. Step 6: Final answer
    x = 2,628.98

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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.