Home / 1,070.12-1,476.83-738.70

Finding the Fourth Proportional to 1,070.12, 1,476.83 and 738.70

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Solution

The fourth proportional to 1,070.12, 1,476.83 and 738.70 is: 1,019.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,070.12 : 1,476.83 = 738.70 : x
  2. Step 2: Convert to fraction form
    1,070.12/1,476.83 = 738.70/x
  3. Step 3: Cross multiply
    1,070.12x = 1,476.83 × 738.70
  4. Step 4: Simplify right side
    1,070.12x = 1,090,934.32
  5. Step 5: Solve for x
    x = 1,090,934.32/1,070.12
  6. Step 6: Final answer
    x = 1,019.45

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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.