Home / 1,148.70-1,574.90-1,127.95

Finding the Fourth Proportional to 1,148.70, 1,574.90 and 1,127.95

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Solution

The fourth proportional to 1,148.70, 1,574.90 and 1,127.95 is: 1,546.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,148.70 : 1,574.90 = 1,127.95 : x
  2. Step 2: Convert to fraction form
    1,148.70/1,574.90 = 1,127.95/x
  3. Step 3: Cross multiply
    1,148.70x = 1,574.90 × 1,127.95
  4. Step 4: Simplify right side
    1,148.70x = 1,776,409.01
  5. Step 5: Solve for x
    x = 1,776,409.01/1,148.70
  6. Step 6: Final answer
    x = 1,546.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.