Home / 1,117.14-1,541.66-619.81

Finding the Fourth Proportional to 1,117.14, 1,541.66 and 619.81

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Solution

The fourth proportional to 1,117.14, 1,541.66 and 619.81 is: 855.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,117.14 : 1,541.66 = 619.81 : x
  2. Step 2: Convert to fraction form
    1,117.14/1,541.66 = 619.81/x
  3. Step 3: Cross multiply
    1,117.14x = 1,541.66 × 619.81
  4. Step 4: Simplify right side
    1,117.14x = 955,539.76
  5. Step 5: Solve for x
    x = 955,539.76/1,117.14
  6. Step 6: Final answer
    x = 855.34

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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.