Home / 1,708.69-2,357.45-1,045.21

Finding the Fourth Proportional to 1,708.69, 2,357.45 and 1,045.21

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Solution

The fourth proportional to 1,708.69, 2,357.45 and 1,045.21 is: 1,442.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,708.69 : 2,357.45 = 1,045.21 : x
  2. Step 2: Convert to fraction form
    1,708.69/2,357.45 = 1,045.21/x
  3. Step 3: Cross multiply
    1,708.69x = 2,357.45 × 1,045.21
  4. Step 4: Simplify right side
    1,708.69x = 2,464,023.11
  5. Step 5: Solve for x
    x = 2,464,023.11/1,708.69
  6. Step 6: Final answer
    x = 1,442.06

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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.