Home / 1,559.19-2,151.43-929.70

Finding the Fourth Proportional to 1,559.19, 2,151.43 and 929.70

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Solution

The fourth proportional to 1,559.19, 2,151.43 and 929.70 is: 1,282.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,559.19 : 2,151.43 = 929.70 : x
  2. Step 2: Convert to fraction form
    1,559.19/2,151.43 = 929.70/x
  3. Step 3: Cross multiply
    1,559.19x = 2,151.43 × 929.70
  4. Step 4: Simplify right side
    1,559.19x = 2,000,184.47
  5. Step 5: Solve for x
    x = 2,000,184.47/1,559.19
  6. Step 6: Final answer
    x = 1,282.84

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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.