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Finding the Fourth Proportional to 1,869.58, 2,580.08 and 1,030.30

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Solution

The fourth proportional to 1,869.58, 2,580.08 and 1,030.30 is: 1,421.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,869.58 : 2,580.08 = 1,030.30 : x
  2. Step 2: Convert to fraction form
    1,869.58/2,580.08 = 1,030.30/x
  3. Step 3: Cross multiply
    1,869.58x = 2,580.08 × 1,030.30
  4. Step 4: Simplify right side
    1,869.58x = 2,658,256.42
  5. Step 5: Solve for x
    x = 2,658,256.42/1,869.58
  6. Step 6: Final answer
    x = 1,421.85

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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.