Home / 1,612.85-2,225.78-904.67

Finding the Fourth Proportional to 1,612.85, 2,225.78 and 904.67

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Solution

The fourth proportional to 1,612.85, 2,225.78 and 904.67 is: 1,248.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,612.85 : 2,225.78 = 904.67 : x
  2. Step 2: Convert to fraction form
    1,612.85/2,225.78 = 904.67/x
  3. Step 3: Cross multiply
    1,612.85x = 2,225.78 × 904.67
  4. Step 4: Simplify right side
    1,612.85x = 2,013,592.48
  5. Step 5: Solve for x
    x = 2,013,592.48/1,612.85
  6. Step 6: Final answer
    x = 1,248.47

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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.