Home / 1,117.18-1,541.73-651.70

Finding the Fourth Proportional to 1,117.18, 1,541.73 and 651.70

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Solution

The fourth proportional to 1,117.18, 1,541.73 and 651.70 is: 899.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,117.18 : 1,541.73 = 651.70 : x
  2. Step 2: Convert to fraction form
    1,117.18/1,541.73 = 651.70/x
  3. Step 3: Cross multiply
    1,117.18x = 1,541.73 × 651.70
  4. Step 4: Simplify right side
    1,117.18x = 1,004,745.44
  5. Step 5: Solve for x
    x = 1,004,745.44/1,117.18
  6. Step 6: Final answer
    x = 899.36

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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.