Home / 1,598.42-2,389.19-1,388.53

Finding the Fourth Proportional to 1,598.42, 2,389.19 and 1,388.53

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Solution

The fourth proportional to 1,598.42, 2,389.19 and 1,388.53 is: 2,075.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,598.42 : 2,389.19 = 1,388.53 : x
  2. Step 2: Convert to fraction form
    1,598.42/2,389.19 = 1,388.53/x
  3. Step 3: Cross multiply
    1,598.42x = 2,389.19 × 1,388.53
  4. Step 4: Simplify right side
    1,598.42x = 3,317,459.49
  5. Step 5: Solve for x
    x = 3,317,459.49/1,598.42
  6. Step 6: Final answer
    x = 2,075.46

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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.