Home / 3,587.78-5,381.36-1,247.18

Finding the Fourth Proportional to 3,587.78, 5,381.36 and 1,247.18

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Solution

The fourth proportional to 3,587.78, 5,381.36 and 1,247.18 is: 1,870.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,587.78 : 5,381.36 = 1,247.18 : x
  2. Step 2: Convert to fraction form
    3,587.78/5,381.36 = 1,247.18/x
  3. Step 3: Cross multiply
    3,587.78x = 5,381.36 × 1,247.18
  4. Step 4: Simplify right side
    3,587.78x = 6,711,541.14
  5. Step 5: Solve for x
    x = 6,711,541.14/3,587.78
  6. Step 6: Final answer
    x = 1,870.67

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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.