Home / 1,177.17-1,624.47-653.19

Finding the Fourth Proportional to 1,177.17, 1,624.47 and 653.19

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Solution

The fourth proportional to 1,177.17, 1,624.47 and 653.19 is: 901.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,177.17 : 1,624.47 = 653.19 : x
  2. Step 2: Convert to fraction form
    1,177.17/1,624.47 = 653.19/x
  3. Step 3: Cross multiply
    1,177.17x = 1,624.47 × 653.19
  4. Step 4: Simplify right side
    1,177.17x = 1,061,087.56
  5. Step 5: Solve for x
    x = 1,061,087.56/1,177.17
  6. Step 6: Final answer
    x = 901.39

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Half scale
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Double scale
Find fourth proportional to 1,178.17, 1,625.85 and 654.19
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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.