Home / 2,385.18-3,577.35-653.40

Finding the Fourth Proportional to 2,385.18, 3,577.35 and 653.40

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Solution

The fourth proportional to 2,385.18, 3,577.35 and 653.40 is: 979.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,385.18 : 3,577.35 = 653.40 : x
  2. Step 2: Convert to fraction form
    2,385.18/3,577.35 = 653.40/x
  3. Step 3: Cross multiply
    2,385.18x = 3,577.35 × 653.40
  4. Step 4: Simplify right side
    2,385.18x = 2,337,440.49
  5. Step 5: Solve for x
    x = 2,337,440.49/2,385.18
  6. Step 6: Final answer
    x = 979.98

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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.