Home / 1,177.10-1,624.39-653.15

Finding the Fourth Proportional to 1,177.10, 1,624.39 and 653.15

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Solution

The fourth proportional to 1,177.10, 1,624.39 and 653.15 is: 901.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,177.10 : 1,624.39 = 653.15 : x
  2. Step 2: Convert to fraction form
    1,177.10/1,624.39 = 653.15/x
  3. Step 3: Cross multiply
    1,177.10x = 1,624.39 × 653.15
  4. Step 4: Simplify right side
    1,177.10x = 1,060,970.33
  5. Step 5: Solve for x
    x = 1,060,970.33/1,177.10
  6. Step 6: Final answer
    x = 901.34

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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.