Home / 1,218.70-1,827.27-525.34

Finding the Fourth Proportional to 1,218.70, 1,827.27 and 525.34

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Solution

The fourth proportional to 1,218.70, 1,827.27 and 525.34 is: 787.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218.70 : 1,827.27 = 525.34 : x
  2. Step 2: Convert to fraction form
    1,218.70/1,827.27 = 525.34/x
  3. Step 3: Cross multiply
    1,218.70x = 1,827.27 × 525.34
  4. Step 4: Simplify right side
    1,218.70x = 959,938.02
  5. Step 5: Solve for x
    x = 959,938.02/1,218.70
  6. Step 6: Final answer
    x = 787.67

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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.