Home / 2,807.56-3,875.75-1,628.40

Finding the Fourth Proportional to 2,807.56, 3,875.75 and 1,628.40

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Solution

The fourth proportional to 2,807.56, 3,875.75 and 1,628.40 is: 2,247.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,807.56 : 3,875.75 = 1,628.40 : x
  2. Step 2: Convert to fraction form
    2,807.56/3,875.75 = 1,628.40/x
  3. Step 3: Cross multiply
    2,807.56x = 3,875.75 × 1,628.40
  4. Step 4: Simplify right side
    2,807.56x = 6,311,271.30
  5. Step 5: Solve for x
    x = 6,311,271.30/2,807.56
  6. Step 6: Final answer
    x = 2,247.96

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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.