Home / 1,689.04-2,514.74-1,680.40

Finding the Fourth Proportional to 1,689.04, 2,514.74 and 1,680.40

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Solution

The fourth proportional to 1,689.04, 2,514.74 and 1,680.40 is: 2,501.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,689.04 : 2,514.74 = 1,680.40 : x
  2. Step 2: Convert to fraction form
    1,689.04/2,514.74 = 1,680.40/x
  3. Step 3: Cross multiply
    1,689.04x = 2,514.74 × 1,680.40
  4. Step 4: Simplify right side
    1,689.04x = 4,225,769.10
  5. Step 5: Solve for x
    x = 4,225,769.10/1,689.04
  6. Step 6: Final answer
    x = 2,501.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.