Home / 3,048.18-4,572.45-857.08

Finding the Fourth Proportional to 3,048.18, 4,572.45 and 857.08

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Solution

The fourth proportional to 3,048.18, 4,572.45 and 857.08 is: 1,285.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,048.18 : 4,572.45 = 857.08 : x
  2. Step 2: Convert to fraction form
    3,048.18/4,572.45 = 857.08/x
  3. Step 3: Cross multiply
    3,048.18x = 4,572.45 × 857.08
  4. Step 4: Simplify right side
    3,048.18x = 3,918,955.45
  5. Step 5: Solve for x
    x = 3,918,955.45/3,048.18
  6. Step 6: Final answer
    x = 1,285.67

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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.