Home / 1,830.69-2,526.62-1,387.85

Finding the Fourth Proportional to 1,830.69, 2,526.62 and 1,387.85

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Solution

The fourth proportional to 1,830.69, 2,526.62 and 1,387.85 is: 1,915.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,830.69 : 2,526.62 = 1,387.85 : x
  2. Step 2: Convert to fraction form
    1,830.69/2,526.62 = 1,387.85/x
  3. Step 3: Cross multiply
    1,830.69x = 2,526.62 × 1,387.85
  4. Step 4: Simplify right side
    1,830.69x = 3,506,549.99
  5. Step 5: Solve for x
    x = 3,506,549.99/1,830.69
  6. Step 6: Final answer
    x = 1,915.43

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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.